Question

A driver in a car traveling at a speed of
59 mi/h sees a deer 104 m away on the road.
Calculate the minimum constant acceler-
ation that is necessary for the car to stop
without hitting the deer (assuming that the
deer does not move in the meantime).
Answer in units of m/s2.

Answer 1

Use v^2=u^2+2as

so a=(v^2-u^2)/2s

final v=0 m s^-1

initial u you will need to convert from 59 mi/h to m s^-1

s=104 m

hence calculate a