A car accelerates uniformly from rest to a

Question

speed of 73.6 mi/h in 7.68 s.
Find the constant acceleration of the car.
Answer in units of m/s
2

Answer 1

a=(vf-vi)/t

vf=73.6 * (1/3600)*1609.34 = 32.9 m/s

vi = 0 (at rest)

a=32.9/7.68 = 4.28 m/s^2