Title: Work, Energy, and Power 1 Work, Energy, and Power. This technology is used in power stations using electromechanical generators. CBSE Class 11 Physics Work-Energy And Power Notes. Work, Energy, and Power. This is about half the energy released during the hydrolysis of ATP. the amount of energy transferred or converted per unit time. At the top of the platform his potential energy is 15,000J. The rate at which work is done is called: A power B work C energy: 10. Physics 11 Work Power Energy. A person pushes a 10 kg cart a distance of 20 meters by exerting a 60 Newton horizontal force. The NEET Syllabus for Physics is given here. , is directly proportional to the change in temperature of the material and depends on the type of material and its mass. Establish that the work done is related to the energy supplied, hence energy and work are measured in the same units. Download CBSE class 11th revision notes for Chapter 6 Work, Energy and Power in PDF format for free. Work and energy are interchangeable. work done = 75 kJ. 45 kg book sits on a shelf 1. In order to generate a 100 mile-per-hour (160 kph) slapper, NHL players depend on three important physics concepts: work, energy and power. Finding the total work done on the block is more complex. Work, Energy, Power Chapter 7 in a nutshell New Concept: Kinetic Energy Table 7-1 Typical Values of Work Work is force times distance…but! Force in direction of motion is what matters… Figure 7-3 Force at an Angle to Direction of Motion: Another Look I've got work to do…. We can distinguish their actions in physics by talking about power. Similar to mass balances studied previously, a balance on energy is crucial to solving many problems. Answers to practice questions. There are many different forms of energy. Moment of Inertia & Rotational Energy Physics Lab IX. Work, Energy Power, and Collision 3 (2) If there is no displacement [s = 0] Example: (i) When a person tries to displace a wall or heavy stone by applying a force then it does not move, the work done is zero. The best advice I can give to you is to budget your time properly, don't wait until the last minute (the night before) to get your work done. Power delivered by the motor = W/t =3920/(20×60) = 3. Prior knowledge: - Kinetic energy: Often you can use kinetic energy to find the speed of an object: 2 2 K=1mv Work: If an object moves a distance d while a force F is applied to it, the work done by the force is:. Work, energy and power are the most used terms in Physics. It has the ability to do work on other objects by. There are two types of energy, kinetic and potential. Problem 1 A body moves through a displacement of 4 m while a force F of 12 Newton acts on it. All NCERT textbook questions have been solved by our expert teachers. The principle of work and kinetic energy (also known as the work-energy theorem) states that the work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle. The coefficient of kinetic friction between the block and the incline is µk. Power • Asks how fast is the work done i. Work and energy are interchangeable. 25 m against a force of 23 N. We define the potential energy V(x) of the spring to be zero when block and spring system is in the equilibrium position. The energy in motion is known as Kinetic Energy whereas Potential Energy is the energy stored in an object and is measured by the amount of work done. This is the Lecture Notes of General Physics which includes Wave Nature of Light, Monochromatic Light Source, Young’s Slits Experiment, Constructive and Destructive Interference, Series of Bright Lines etc. For example, any given body has kinetic energy if it is in motion. Radioactive Decay - General Principles Radioactive isotopes are atoms whose inner core, their nucleus, is unstable, i. A 2kg crate rests on the floor. The height of each bounce gradually decreases until the ball stops moving. Physics Notes Class 11 CHAPTER 6 WORK, ENERGY AND POWER Work When a force acts on an object and the object actually moves in the direction of force, then the work is said to be done by the force. pdf Created Date:. GPE and KE can be transferred from one to other. To give a vague idea, we can describe work as a force applied over a distance. Class 11 Important Questions for Physics – Work, Energy and Power NCERT Exemplar Class 11 Physics is very important resource for students preparing for XI Board Examination. Topic 5: Work and Energy Worksheet (A) WORK is accomplished when a force moves an object through a distance. mechanical energy d. A block of mass m is pulled over a distance d by an applied force F which is directed in parallel to the displacement. Q represents the net heat transfer—it is the sum of all heat transfers into and out of the system. In order to move the object, the total amount of work done was 1500 Joules. 3 Work, Energy and Power Work and Kinetic Energy 2. You can access them by clicking on the label ‘work energy power’ or by trying a search for the required word using the search box provided on this page. radioactive decay of particles 9. Learn test and power ap physics work energy with free interactive flashcards. First, the scalar product is equal to jA~jjB~jcos where is the angle between the two vectors. Work and Power. The amount of work done is equal to the amount of energy transferred. We do a lot of work everyday. 0108 Lecture Notes - AP Physics 1 Review of Work, Energy and Power. Learn energy, work and power quizzes with multiple choice questions: output of a truck is 4500 j and its efficiency is 50%, input energy provided to truck is, with choices 900 j, 5000 j, 9000 j, and 500 j for undergraduate degree. FZX, Chapter 6: WORK, ENERGY, and POWER Newton’s laws form a very useful approach for analyzing the question of dynamics -- why something moves as it does, or how it will move in the future. Work and energy quiz questions and answers pdf, test for physics certifications. Class 11th Physics important questions in chapter 06 Work, Energy and Power for free download in PDF format. Two of these words are “work” and “energy. (Equivalent to American high school diploma). Toggle navigation. We also learned about vector quantities. Work, Energy and Power Class 11 Notes Physics Chapter 6 • Work is said to be done when a force applied on the body displaces the body through a certain distance in the direction of applied force. The Work Energy Principle is one of the big ideas in introductory physics courses. INSTITUTION New York Inst. Analyze data to explain the heating and cooling of land, air, and water. KE = 1 2 mv 2, measured in Joules. PHYSICS UNIT 5 – WORK, POWER, AND ENERGY WFd WF d cos W PFv t % Efficiency o 100 i W X W 1 2 2 KE mv WKE PE mgh KE PE KE PEi iff WORK 1. and to solve computational problems involving work and energy. Download it once and read it on your Kindle device, PC, phones or tablets. WORK, POWER AND ENERGY WORK POSITIVE NEGATIVE ZERO ENERGY -MECHANICAL ENERGY ENERGY TRANSFORMATION POWER. Work, Energy & Power. _____ System. Andable and Ben Pumpiniron, are in the weightlifting room. Hair dryer Useful energy is transferred as heat and kinetic energy, the wasted energy is transferred as sound. How Heat Travels Heat Quiz. Read through this handout in its entirety. 0 J and has been stretched 1. m, which equal a Joule (J). when a ball is lifted to a height of height h when it is drooped just before touching the ground, what would the kinetic energy acting on the ball. It should be noted however, that some of the work done is converted into Power is the work done or energy transferred in a given time. Some of the worksheets displayed are Physics work work and energy, Topic 5 work and energy, A guide to work energy and power, Work energy and power, Physics work and energy work solutions, Name period date, Mission 1 what is energy, Work energy problem. Describe how energy can change from one form of energy into another. There are various forms of energy available to us for example mechanical energy (potential energy + kinetic energy), heat energy, chemical energy, electrical energy and light energy. Power is measured in watts. When it returns to its original level after encountering air resistance, its kinetic energy is _____. Power (P) is the word used to describe the rate at which work is done (or energy is transformed). Worksheets are very critical for every student to practice his/ her concepts. Work done by the force is equal to the product of the force and the displacement of the object in the direction of force. What is the mechanical advantage of. 6 Energy work power a. If an appliance is energy efficient, it means that more of the input energy is transferred into useful output energy. When work is done on an object, what does the object gain? 14. Work done is equal to the product of the force and displacement. It can be converted from one form to another or transferred from one body to another, but the total amount remains constant. In the diagram below, the spring has a force constant of 5000 N/m, the block has a mass of 6. - Spring force. Toggle navigation. Rebecca has asked Brent to move the television from one side of the room to the other. The work set in this worksheet is well differentiated to meet the need of every student's learning ability from core to extended and for raising attainment level. Energy is added to a system when an external force moves a body. the amount of energy transferred or converted per unit time. Energy Multiple Choice Homework PSI Physics Name_____ Multiple Choice Questions 1. Energy has been transferred. Energy/Work – E g, E K, W, E M, conservation of energy, efficiency, power. How much work is done on the block by the force F? A. 01 seconds). Being concentrated on a wide range of applications of thermodynamics, this book gathers a series of contributions by the finest scientists in the world, gathered in an orderly manner. It is important that we consider mechanical work, energy, and power, for it is the treatment of these terms from First Principles that will be applied directly to electrical circuits. GCSE (9-1) Physics Specification Pearson Edexcel Level 1/Level 2 GCSE (9-1) in Physics (1PH0) Topic 8 – Energy - Forces doing work c Appreciate the power. , Austin Tx. There's a trade–off of energy when using simple machines. Physics Lesson Plan #9 Energy, Work and Simple Machines David V. The rotary motion kit (shown on the right); a LabPro unit;. This is physics quiz practice set 1 provided by gkarea. 6 ENERGY, WORK AND POWER CONVERSION OF ENERGY We have already explained how kinetic energy and gravitational potential energy can be converted backwards and forwards. Energy has been transferred. In the lab you will study work from the gravity force, which is constant and work from a rubber band which is a variable force similar to a spring or “Hooke’s Law” force. A force of 20 newtons pushing an object 5 meters in the direction of the force does 100 joules of work. Diver Problem A stuntman (85 kg) stands atop of a high platform. T Lko) Cleared SSC-CGL 2016 pre+mains Follow me on unacademy Please rate ,review & share. Twitter Facebook WhatsApp. If the force F, and the displacement d. Physics 1D03 - Lecture 21 Power Power is the rate at which work is done: Average power = Work/time Instantaneous power: Average over an infinitesimal time dt, displacement ds; the work is dW = F • ds, and power is units: 1 J/s =1 watt (W) F v ds = = F⋅ = ⋅ dt dt dW P. Energy is the driving force for the universe. You will learn that work and energy are closely related to Newton's laws of motion. 70 J 140 W KE & PE 8. SI Unit of Work is Joule. To be specific, power is defined as the work done divided by the time that it took to do that work. There will be a note packet handed out in class (can be found below) and we will be practing the work power and energy formulas. Electrical Circuits – circuit symbols, Ohm’s law, potential difference, current & resistance. Instance 1 shows methods to get the used cell variety of cells with worth. They will be able to perform calculations for kinetic and potential. 0 m across a level floor where the coefficient of friction is 0. Work, Energy Power, and Collision 3 (2) If there is no displacement [s = 0] Example: (i) When a person tries to displace a wall or heavy stone by applying a force then it does not move, the work done is zero. m 2 >> m 1. All NCERT textbook questions have been solved by our expert teachers. A ball is thrown from the top of a building with an initial speed of 8 m/s at an angle of. AP Physics 1 Help » Newtonian Mechanics » Work, Energy, and Power Example Question #1 : Work, Energy, And Power A bodybuilder is in the midst of a an intense training session. Ex: Consider a person holding a weight at a distance 'h' off the floor as shown in figure. Work is the change in energy. the amount of energy transferred or converted per unit time. 100 joules of work are done on an object when a force of 10 N pushes it. Any of the building’s power requirements that are not met by the PV system are powered by the transmission grid. Learning the important concepts is very important for every student to get better marks in examinations. So the 10-N force over 5 m does more work and could produce a greater change in KE. A person pushes a 10 kg cart a distance of 20 meters by exerting a 60 Newton horizontal force. Key important points are: Work, Energy and Power, Product of Force, Unit of Work, Amount of Energy, Amount of Work, Different Forms of Energy, Formula for Kinetic Energy, Formula for. Indicate your answer in the space provided. Energy, Work, Power and Efficiency Worksheet 1. These are the most important questions for J EE Main, Advance, UPSEE, BITSAT and all other entrance exams. Therefore, the total work done on the ball by you and by gravity must equal zero. com Part II. No machine is hundred percent efficient because there is always energy in the form of heat and sound. Work and Energy 1. When it comes to work in physics, you're sure to see problems involving power, which is the amount of work being done in a certain amount of time. Vocabulary work energy kinetic energy work-energy theorem joule power watt I n Chapter 9, you learned about the conservation of momentum. Power dissipated by heating coil _____ 3. Holt Physics 35 Quiz Section Quiz: Power Write the letter of the correct answer in the space provided. Power is the rate of work performed per unit time. Work done = Force x distance moved (in a translational way!) Work done also means transfer of energy Energy associated with movement is Kinetic Energy + eqn Energ. Work, Energy and Power. Work done by a force in displacing a body is equal to change in its kinetic energy. 11 Physics notes Chapter 6 Work, Energy and Power. cof e lab setup and conclusions pdf. 3 Power Specification link-up 3. The faster an object moves, the greater its kinetic energy. States of matter b. Work and energy are interchangeable. It has the ability to do work on other objects by. When a force acts from within a system, energy is removed from the system. 0 J and has been stretched 1. If the PDF does not show in the window above, then you can access it directly here: Work-Energy Calculations (PDF) More "Work Energy And Power Physics Worksheet. The box is lifted 0. Due dates: A Day Feb 9th / B Day Feb 10th Vocabulary Words F E P Work X X X Power X X Energy Work-Energy Theorem X X Thermodynamics Entropy Zeroth law of thermodynamics X First law of thermodynamics. 85 m high tabletop. Choose your answers to the questions and click 'Next' to see the next set of questions. Physics 11 - Work, Power, Energy Worksheet Last modified by:. 1 Alternative Units of Work/Energy in J Example 6. Because the force is in the same direction as the cart’s displacement ( q = 0°), the net work is simply the product of the net force and the distance the cart is pushed. A block slides down a curved frictionless tract and then up an incline. Many common exercises involve doing work. (D) Work is found using W=F/d, where F is the component of force in the direction of displacement and d is the magnitude of the displacement. Work, Energy & Power. 0 J and a constant of 180. The unit of power is the joule per second (J/s), known as the watt (in honor of James Watt, the eighteenth-century developer of the steam engine). How far is the object pushed? What power is used if this is done in 4 seconds? 10 m 25 W 7. Work and energy multiple choice questions and answers (MCQs), work and energy quiz answers pdf 1, online secondary school courses for physics degree. You learned that you could examine the state of a system before and after. 20 kg, and the height h of the hill is 5. When one object does work on another, energy is transferred. Power can be calculated by the ratio power = work / time and is usually measured in Watts (1 Watt = 1 Joule/second). The pattern of each test comprises all the types of objective questions of IIT JEE and AIPMT (MCQ with one or more correct option, Comprehension, Assertion-Reason, Match Matrix etc). List different forms of energy and describe examples of energy transformations. What is the work done in the power stroke? W = F • Δx = 5 x 10-12 x 5 x 10-9 = 2. When a force is applied on a body and a displacement is carried out in any direction except in a direction perpendicular to the direction of the force, an amount of work is done by the force Work = Force x distance travelled unit of work is Joules(s) 1 joule = Newton x 1 metre force and displacement not doing any work. PHYSICS FORMULAS 2426 Electron = -1 and power. Lin 1 Show all work for the following questions, including the equation and substitution with units. Work •Work is energy transferred to or from an object by means of a force acting on the object. Before you come to lab A. Work is done when a force produces motion. Conservation of energy springs & gravity example Two types of forces: (-)Work done by friction heat Thermal atomic motion Work-energy theorem (all forces) Work - Energy Theorem (all forces) Energy conversion while skiing Units again Food Calories Power Other units Kilowatt hours Work and Energy Physics 100 Chapt 5 Physicist's definition of. Work done = Force x distance moved (in a translational way!) Work done also means transfer of energy Energy associated with movement is Kinetic Energy + eqn Energ. 1 Work You have learnt before, that an object is said to have done work if its position or shape changed under the action of a force applied on it. uk physics 11 work power pdf In physics, a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the. AP Physics Practice Test: Work, Energy, Conservation of Energy This test covers Work, mechanical energy, kinetic energy, potential energy (gravitational and elastic), Hooke’s Law, Conservation of Energy, heat energy, conservative and non-conservative forces, with some problems requiring a knowledge of basic calculus. A spring has a potential energy of 72. Height differences between high and low tides create tidal currents in coastal areas, and these currents can be strong enough to drive turbines. A tank of fuel can do a certain fixed amount of work, but the power produced when we burn it can be any amount, depending on how fast it is burned. Then it usually goes on to explain that “work” is the action of moving something against a force. It’s quite impressive. (ii) Calculate the work done against friction. W = F Cos θ. We begin this subsection with a treatment of the work-energy theorem for rotation. 1 Consider the following two vectors: A~: magnitude 20, direction 37 North of East B~: magnitude 10, direction 45 North of West Find the scalar product A~B~. Electrical Circuits – circuit symbols, Ohm’s law, potential difference, current & resistance. the ability to do work. There are many good laboratories that can be done in the "Electrical Energy in the Home" topic. Simple machines give us an advantage by changing the amount, speed, or direction of forces They allow us to use a smaller force to overcome a. 25 m against a force of 23 N. You are only in contact with the ball for a very short amount of time (approximately 0. CBSE Class 11 Physics Worksheet - Work, Energy & Power. These are the most important questions for J EE Main, Advance, UPSEE, BITSAT and all other entrance exams. Evaporation d. Physics Energy Unit Test Study Notes SPH3U. In these notes a brief and simple explanation of all important topics is given which will help students make an. In Physics, power is associated with energy and has a precise meaning. /Physics–June ’16 [2] 1 Which quantity is a vector? (1) power (3) speed (2) kinetic energy (4) weight 2 A 65. The formula for net work is net work = change in kinetic energy = final kinetic energy - initial kinetic energy. The force of friction between the box and the floor is 20 N. It can be seen as a form of solar energy, as the sun powers the hydrologic cycle which gives the earth its water. At the beginning of the course we learned about kinematics which is the description of how objects move in terms of acceleration, velocity, displacement and time. Physics Energy Unit Test Study Notes SPH3U. Vi = 0 Vf = 0 Consider the work done by a single force. 8 Circular motion – Core 119 Circular motion and centripetal acceleration 119. 25 m from the ground. Power = work time P W t = STAAR PHYSICS RefeRenCe MATeRIAlS. kinetic energy c. WORK, POWER AND ENERGY WORK POSITIVE NEGATIVE ZERO ENERGY -MECHANICAL ENERGY ENERGY TRANSFORMATION POWER. Free PDF download of Class 11 Physics revision notes & short key-notes for Chapter 6 - Work, Energy and Power to score high marks in exams, prepared by expert Physics teachers from latest edition of CBSE(NCERT) books. and K f = final kinetic energy. We do a lot of work everyday. 1 joule = 10 7 erg. They will be able to perform calculations for kinetic and potential. 1 joule = 10 7 erg. Samar Hathout ; KDTH 101; 2 Work Work is the transfer of energy through motion. Energy is the capacity to perform work. Download CBSE class 11th revision notes for Chapter 6 Work, Energy and Power in PDF format for free. The coefficient of kinetic friction between the block and the incline is µk. 8 N kg-1) Q1 A 75-kg person pushes a 30-kg box with a force of 120 N along a horizontal floor for 3 metres. This is physics quiz practice set 1 provided by gkarea. 7 A little concept of vector mathematics is applied here and in which a little mistake may destroy the concept of gravitational mechanics. s unit of energy is erg. Learn about concepts of work, energy and power with formulae. 125 For free distribution 18Physics Work, energy and power 18. Calculate the work done by a 47 N force pushing a 0. The Workshop Tutorial Project - Solutions to MI6: Work, Power and Energy 35 Workshop Tutorials for Introductory Physics Solutions to MI6: Work, Power and Energy A. That by 20 N over 2 m = 40 J. SPH4U Grade 12 Physics Energy and Momentum Test Work done by a constant force Work is the energy transferred to an object when a force acting on the object moves it through a distance. Work-Energy Theorem How can you apply the work-energy theorem to lifting a bowling ball from a storage rack to your shoulder? The bowling ball has zero kinetic energy when it is resting on the rack or when it is held near your shoulder. A bulb with a higher wattage will use more electricity per unit of time. Check out these free physics video clips online and have fun learning about science. Brent grumbles that he’s been working all day and. to reach the top of the hill. State of Texas Assessments of Academic Readiness. Acting force changing with position. How much work does the student do? 2. SI unit of energy is Joule (J) and c. Somebody who has the capacity to work for 14-16 hours a day is said to have a large stamina or energy. Physics 11 - Work, Power, Energy Worksheet. This distance is called the displacement of the object. These are the most important questions for J EE Main, Advance, UPSEE, BITSAT and all other entrance exams. One example is stretching a rubber band. Equivalent Units mksq System 5 IV. Calculating Power. Science 9 Unit 3—Physics Worksheet 3-2— Work and Mechanical Advantage Page 2 6. Newton's laws of motion especially F=ma Forces, mass, velocity, acceleration etc. Because the force is in the same direction as the cart’s displacement ( q = 0°), the net work is simply the product of the net force and the distance the cart is pushed. AP Physics Practice Test: Work, Energy, Conservation of Energy This test covers Work, mechanical energy, kinetic energy, potential energy (gravitational and elastic), Hooke’s Law, Conservation of Energy, heat energy, conservative and non-conservative forces, with some problems requiring a knowledge of basic calculus. In dynamics we were able to define a force conceptually as a push or a pull. 6) •Discuss Mini Exam II •Review: Work and Kinetic Energy •Conservative and non-conservative forces •Work and Potential Energy •Conservation of Energy •Calculus method for determining work •Power. There will be a note packet handed out in class (can be found below) and we will be practing the work power and energy formulas. Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 11. A clear understanding of the relationship between voltage polarity and current direction for sources and loads is very important for students to have before they. You have provided all information about work, energy, and power. During the motion of the ball, A : the kinetic energy of the ball is constant. In Physics, power is associated with energy and has a precise meaning. If positive work is done, the system gains energy. roller coaster data. Multiply your weight in. Assuming air resistance to be negligible and acceleration due to gravity to be 10 m s –2, the kinetic energy of the shotput when it just reaches the ground will be (a) 2. The work becomes stored energy in the spring. Andable and Ben Pumpiniron, are in the weightlifting room. Power Definition The rate that work is performed, or the rate of energy transfer. Physics video on the work-energy theorem. physics 111N 12 potential energy! for forces that are conservative, we can define a potential energy that accounts for energy “stored” by doing work! e. A moving car, walking up stairs, lifting heavy objects, an airplane flying, etc are among the most common examples that give us insight into the concept of work, power, and energy. There are various forms of energy available to us for example mechanical energy (potential energy + kinetic energy), heat energy, chemical energy, electrical energy and light energy. Physics 12 Work, Energy & Power Problem Set Solve the following problems on a separate sheet of paper. How much work must be done to roll a safe of mass 90. s unit of energy is erg. Indicate your answer in the space provided. If positive work is done, the system gains energy. In order to generate a 100 mile-per-hour (160 kph) slapper, NHL players depend on three important physics concepts: work, energy and power. Then it usually goes on to explain that “work” is the action of moving something against a force. NCERT Solutions for Class 11 Physics Chapter 6 Work Energy and power are part of NCERT Solutions for Class 11 Physics. The Think Sheets are synchronized to readings from The Physics Classroom Tutorial and to missions of the Minds On Physics program. SI unit for power is Watts (w) Therefore work =power × time. Conservation of Energy General Remarks: Two Equivalent Description of Motion: 1. x² k is the spring constant and x is the amount of compression or streching Kinetic Energy; Ek=1/2mv² m is the mass, v is the velocity Work Power Energy Exams and Solutions Physics Formulas Work Power Energy/Cheatsheet. that an increase of 100× in intensity (W. Calculus is used freely in formulating principles and in solving problems. A 2kg crate rests on the floor. Physics Notes Class 11 CHAPTER 6 WORK, ENERGY AND POWER Work When a force acts on an object and the object actually moves in the direction of force, then the work is said to be done by the force. A force of 20 newtons pushing an object 5 meters in the direction of the force does 100 joules of work. Power is defined as the rate at which the work is done. Work done by all the forces is equal to the change in kinetic energy. Kinetic and Potential Energy Vocabulary: • kinetic energy energy of movement • potential energy stored energy • potential chemical energy stored energy released by chemical changes Comprehension Questions 1. External Forces; Analysis of Situations Involving External Forces. First, the scalar product is equal to jA~jjB~jcos where is the angle between the two vectors. Topic 5: Work and Energy Worksheet (A) WORK is accomplished when a force moves an object through a distance. In this chapter we give a very basic introduction to the physics of PET imaging. dW P dt ≡ Given this and the definition of Work, derive an expression for Power as a function of velocity. landartgenerator. Finding the total work done on the block is more complex. Work, Power, Energy Worksheet. Power is the rate of transfer of energy or the rate of doing work. Kinetic Energy - The energy in moving objects. AP Physics 1 Help » Newtonian Mechanics » Work, Energy, and Power Example Question #1 : Work, Energy, And Power A bodybuilder is in the midst of a an intense training session. The energy. To convert from rectangular to polar notation: Given: U = electric potential energy [ J] W = work done on a. Physical Sciences; Grade 12; Work, Energy and Power; View Topics. Work, Power and Energy is a very important concept in physics. m 1 >> m 2. KS/Grade-9/ Dept of Physics/Worksheet on Work, energy and power/2012 Page 3 Kalaafaanu School Grade -8 / Physics A student uses ideas about energy to produce a spreadsheet motion of the car. Work, energy and power | gcse-revision, physics, forces-motion, work-energy-and-power | Revision World.