Formula for work energy

    • [DOC File]More Work done problems - G-PISD

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      A 32kg rock free falls from rest to a final speed of 19.62 m/s. Using the work energy formula, calculate the distance it fell. Confirm your answer using a kinematic equation (Fantastic Four). Show your work for credit.

    • [DOC File]Work, Energy, & Power Webquest

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      What is the formula? Click on Kinetic Energy. What is kinetic energy? What is the kinetic energy formula? What will happen to your Kinetic energy if you triple your speed? Click on Mechanical Energy. When work is done on an object, what does the object gain? What is mechanical energy? Give an example of something that shows mechanical energy is ...

    • Physics Chapter 10

      -the formula for kinetic energy is KE = m v2-work causes a change in the energy of a system-when work is done on a system, there is a change in the kinetic energy, so a second formula for. work is . W = KE-the unit for work in the metric system is the Joule (J) with units of N-m or . Calculating Work-if the environment does work on the system ...

    • [DOC File]Development of the Work Energy Concept in Mechanics

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      Work energy, however, has no moment in history and no founding father. Work energy is similar to a meal in reverse, the dessert served first, and lastly the meat and potatoes. ... The formula, , will compute work as long as the force is constant, however for a variable force, a more general expression, an integral, must be used.

    • [DOC File]Work Practice Problems Worksheet #1 - Palmer ISD

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      Work = 20N X 10m. Work = 200 J. 2) How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200N? Work = Force X Distance. Work = 200N X 20m. Work = 4000 J. A 900N mountain climber scales a 100m cliff. How much work is done by the mountain climber? Work = Force X Distance. Work = 900N X 100m. Work = 90,000 J

    • [DOC File]Work and Energy

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      Work-Kinetic Energy Theorem. The work done on an object is equal to the change in kinetic energy of the object. This is known as the work-kinetic energy theorem. It is derived as follows. The W-KE theorem is very useful. For example, how much work is done to accelerate a 2000-kg truck from 8.3 m/s to 11.1 m/s over a distance of 50.0 m?

    • [DOC File]Kinetic and Potential Energy Worksheet Name

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      The formula for calculating kinetic energy is _____. The two factors that determine the amount of kinetic energy are (see equation above) _____ and _____. Classify the following as a type of potential energy or kinetic energy (use the letters K or P) 1.

    • [DOC File]Energy and Power Test Study Guide – answer key

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      What is the power of a light bulb that converts electrical energy at a rate of 200 joules per second? (Power = Work ÷ time) 200 watts. What is the formula for power? Power = Work ÷ time. What is the formula for work? Work = force X distance. What is thermal energy? The total energy of the particles in an object. What is the unit for energy ...

    • [DOC File]I

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      How much work does the engine do on the rocket during those first 100 meters? Based on the given information, how much kinetic energy would you expect the rocket to have when it’s at a height of 100 meters? (Hint: Don’t use a formula for kinetic energy. Instead, think about the relationship between work, kinetic energy, and potential energy.

    • [DOC File]Calculating Work and Power by Climbing Stairs

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      Calculate the work done by the stair climber in climbing the stairs slowly and rapidly using units of joules. Record your answers in Table 3 below. Formula: Work done (joules) = height of staircase (m) X weight of stair climber (N) Table 3: Work Done. Climbing Stairs Slowly Rapidly Work done (Joules)

    • [DOC File]Work (oh no, not again

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      GRAVITATIONAL ENERGY. When we raise an object, the energy we use is changed into gravitational energy. We can use the following formula to work out how much energy has been converted to gravitational energy. Gravitational energy = mass x gravitational field strength x height = mgh. Ep = mgh. Use this formula to answer the following questions.

    • [DOC File]Physics 11 - Work, Power, Energy Worksheet

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      Work requires a change in energy, which engine uses more gas to go 22m? Even an empty semi truck uses much more gas than a car. Why? Calculate the work done by a 47 N force pushing a pencil 0.26 m._____ Calculate the work done by a 2.4 N force pushing a 400 g sandwich across a table 0.75 m wide._____ How far can a mother push a 20.0 kg baby ...

    • [DOC File]Potential Energy Worksheet

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      The formula for potential energy is The unit of measurement for potential energy is _____. John has an object suspended in the air. It has a mass of 50 kilograms and is 50 meters above the ground. Calculate the objects potential energy. Mrs. Jacobs dropped an object from 10 meters. She knows it did 50 joules of work.

    • [DOCX File]Study Guide for Force, Energy, Work and Power, Simple Machines

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      Study Guide for Energy (KE, PE, Work and Power, Simple Machines, Thermal) Energy. Understand the difference between . Kinetic . Energy and Potential Energy – identify on a diagram Unit for energy is Joules. Be able to identify an energy as Kinetic or Potential, based upon a description of a situation. Know how to use the formula . KE=1/2mv. 2

    • [DOC File]Activity 1.2.5 Mechanical System Efficiency ATV

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      Use the following formula to determine how many joules (J) of work it took to lift the weight in the system. As you carry your units through to the solution, change the final answer from N∙m to J. Determine the work done by the winch system for each test.

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