1
Q
Define work done
A
The work done by a force on a body is the product of the force and the displacement in the direction of the force
2
Q
Define energy
A
It is the capacity of a body to do work on another body
3
Q
Define GPE
A
It is the energy a body possesses due to its position in a gravitational field
4
Q
State the Principle of Conservation of Energy
A
Energy can neither be created or destroyed, but it can be transformed from one form to another
5
Q
Define power
A
It is the rate at which work is done with respect to time
6
Q
Define efficiency
A
It is the ratio of useful energy output to the energy input (expressed as percentage)
H2 Physics
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