work and gravitational potential energy

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5 Terms

1
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work

  • when force moves an object through a distance that is in the direction of force

  • scalar 

  • product of two vectors

2
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work formula

  • W = ԪΔԨ

  • W = work (J)

  • Ԫ = force (N) (mass (kg) x acceleration (m/s2))

  • ΔԨ = displacement (m)

3
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three conditions for work

  • force and displacement the object travels must be in the same direction

  • must be a force

  • must be movement

4
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gravitational potential energy

energy an object has due to its position in a gravitational field

5
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gravitational potential energy formula

  • Ep= mgh

  • Ep= gravitational potential energy (Joules)

  • m = mass (kg)

  • g = gravity (9.81 m/s2)

  • h = height (m)