Question

a sports car moving at constant speed travels 115m in 5.3 s. If it then brakes and comes to a stop in 4.0 s, what is it's acceleration? Express the answer in terms of g's, where g =9.80 m/s (Take the positive direction to be the direction of travel)

Answer 1

V = 115m/5.3s = 21.7 m/s
A = V/T = (21.7 m/s) / 4s =5,4245 m/s^2
That is 0,55g’s