work and power

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Physics

Energy & Momentum

IGCSE Physics

Edexcel

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7 Terms

1
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equation for work done

work done = force x distance moved

2
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work done =

energy transferred

3
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equation for gravitational potential energy

gravitational potential energy =

mass x gravitational field strength x height

4
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equation for kinetic energy

kinetic energy = ½ x mass x speed2

5
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equation for power

power = work done/time taken

6
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definition of power

the rate of energy transfer/the rate of doing work

7
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definition of work done

  • work done on an object is the energy you put in (lift, stretch or speed up an object)

  • the energy gained can be in the form of:

    • GPE

    • kinetic energy

    • work

    • elastic potential energy

    • etc.