A car accelerates from 0 m/s to 30 m/s in 8
seconds. What was its acceleration?

Acceleration = (change of speed) / (time for the change)Change in speed = (30 - 0) = 30 m/s.Time for the change = 8 sec.Acceleration = 30/8 = 3.75 m/s per second.

a=v-u/t=30-0/8=30/8=3.75m/s^2