Question

A woman driving at a speed of 23 m/s sees a deer on the road ahead and applies the brakes when she is 210 m from the deer. If the deer does not move and the car stops right before it hits the deer, what is the acceleration provided by the car's brakes?

Answer 1

average speed (Va) is __ (23 + 0) / 2

time (t) is distance/speed __ 210 / Va

acceleration is speed change/time
__ (0 - 23) / t

Answer 2

lalala

Answer 3

23