Question

A truck moving at 25 m/s south accelerates to 15 m/s south in 2.5 s. What is its acceleration?

Answer 1

Solution

Acceleration is given by following equation of motion

$a=\frac{v-u}{t}$

Putting u and v and t value

$a=\frac{25-15}{2.5}=0.4$ m/sec²