Question

 A car initially traveling at a speed of 16 meters per second accelerates uniformly to a speed of

20 meters per second over a distance of 36 meters.  What is the magnitude of the car’s acceleration?

Answer 1

The magnitude of the car’s acceleration

$$a=\frac{v_f^2-v_i^2}{2d}$$

$$a=\frac{20^2-16^2}{2*36}=2\:\rm m/s^2$$