Question

A car is travelling along a road at 30 m/s when a pedestrian steps into the road 55 m ahead. The
driver of the car applies the brakes after a reaction time of 0.5 s and the car slows down at a rate of
10 ms? What happens?

Answer 1

Answer:

The driver sees a problem on the road ... If the car is initially travelling at u m/s, then the stopping distance d m travelled by the ... A 10% increase in the speed causes a 21% increase in the stopping distance ...