Physics (AS & A Level) · Feb / March 2022 · Paper 12 · Question 17
9702Gravitational potential energy and kinetic energy
A rock of mass 40 kg is released from rest from a height of 20 m above the surface of a planet. The rock has a kinetic energy of 32 kJ when it hits the surface of the planet. The planet does not have an atmosphere. What is the weight of the rock on the surface of the planet?
- A1.6 N
- B390 N
- C1.6 kN
- D64 kN
As printed in the paper
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Correct answer: C. 1.6 kN
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