Acceleration = change of velocity divided by time interval = δv/δt.
find the acceleration of a car that can go from rest to 120 km/h in 14 s.

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.