A car of mass 1000kg is travelling down a steep hill. The brakes fail and the driver uses a horizontal sand-filled safety road to stop the car.
The car enters the sand at a speed of 10 m / s and experiences a constant stopping force of
2500N.
How far does the car travel in the sand before coming to rest?
A 2.0 m
B 4.0 m
C 20 m
D 40 m
