Question

A car accelerates uniformly from 5m/s to 13 m/s in 4 seconds. What is the acceleration of the car in m/s-2

Answer 1

We can find the acceleration of the car from the kinematic equation:

$$v=v_0+at,$$ $$a=\dfrac{v-v_0}{t}=\dfrac{13\ \dfrac{m}{s}-5\ \dfrac{m}{s}}{4\ s}=2\ \dfrac{m}{s^2}.$$

Answer:

$a=2\ \dfrac{m}{s^2}.$