Question

A car is driven along a straight road at a constant speed of 50ms^-1 when the driver suddenly notices that there is a fallen tree blocking the road 125m ahead. The driver immediately applies brakes giving the car a constant retardation of 12.5ms^-2. how far in front of the tree does the car come to rest? If the driver had not reacted immediately and brakes were applied 1 second later,with what speed would the car have hit the tree?

Answer 1

Answer:

See answer in above attachment