Physics (AS & A Level) · Oct / Nov 2020 · Paper 12 · Question 18
9702Gravitational potential energy and kinetic energy
The change in gravitational potential energy ΔE of an object of mass m when moving through height Δh near the surface of the Earth is given by the equation shown. ΔE = mgΔh Which equation is needed as part of the derivation of this expression?
- Akinetic energy = 1/2 × mass × (speed)²
- Bmoment = force × distance
- Cweight = mass × acceleration of free fall
- Dwork done = power × time
As printed in the paper
Show the answer
Correct answer: C. weight = mass × acceleration of free fall
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.