Question

a car is moving at 38.4m/s when it slams on the brakes and slows to 10.0 m/s in 2 s. assuming constant acceleration, how many meters did the car travel during that time?

Answer 1

Answer: - 14.2 m/s^2

Explanation: use the formula -
Vf = Vo + at

Vf: final velocity

Vo: initial velocity

a: acceleration

t: time

Vf = Vo + at, subtract Vo from both sides and then divide both sides by t to isolate a.

(Vf - Vo)/ t = a, then plug in the values and solve.

(10 - 38.4)/2 = -28.4/2 = -14.2 m/s^2

Hope this helps.