Question

A boy who is riding a bicycle moves with an initial velocity of 5 m /s. Ten

seconds later, he is moving at 15 m/s. what is his acceleration?

Answer 1

Given:

$v_0=5\: \rm m/s$

$v=15\: \rm m/s$

$\Delta t=10\:\rm s$

The aceeleration of a bicycle

$$a=\frac{\Delta v}{\Delta t}=\frac{15-5}{10}=1\:\rm m/s^2$$