Question

A car is accelerating in a straight line. It's initial speed is 5 m/s and final speed is 12 m/s. The time is 4 seconds. Find the acceleration.

Answer 1

By the definition of the acceleration, we have:

$$a=\dfrac{v-v_0}{t}=\dfrac{12\ \dfrac{m}{s}-5\ \dfrac{m}{s}}{4\ s}=1.75\ \dfrac{m}{s^2}.$$

Answer:

$a=1.75\ \dfrac{m}{s^2}.$