Question

While approaching a red light, a student driver begins to
apply the brakes. If the car’s brakes can cause an average
acceleration of 2.90 m/s2 [S] and it takes 5.72 s for the
car to come to rest, what was the car’s initial velocity?

Answer 1

v = Vi + a t
0 = Vi - 2.90 m/s^2 * t
Vi = 2.90 m/s^2 * 5.72 s
= 16.59 m/s