Physics (AS & A Level) · May / June 2016 · Paper 12 · Question 17

A boy on a bicycle starts from rest and rolls down a hill inclined at 30° to the horizontal. The boy and bicycle have a combined mass of 25 kg. There is a frictional force of 30 N, which is independent of the velocity of the bicycle. What is the kinetic energy of the boy and the bicycle after rolling 20 m down the slope?

1. A1850 J
2. B2450 J
3. C3050 J
4. D3640 J

As printed in the paper