Physics (AS & A Level) · Oct / Nov 2017 · Paper 11 · Question 9

A car is moving at constant speed in a straight line with the engine providing a driving force equal to the resistive force F. When the engine is switched off, the car is brought to rest in a distance of 100 m by the resistive force. It may be assumed that F is constant during the deceleration. The process is then repeated for the same car with the same initial speed but with a constant resistive force of 0.800 F. How far will the car travel while decelerating?

1. A120 m
2. B125 m
3. C156 m
4. D250 m

As printed in the paper