Question

Calculate the acceleration of josh riding his bicycle in a straight line that speeds up from 4m/s to 6m/s in 5 seconds

Answer 1

Given:

$\Delta v=v_f-v_i=\rm 2\: m/s$

$\Delta t=5\:\rm s$

The acceleration

$$a=\frac{\Delta v}{\Delta t}=\frac{2\:\rm m/s}{5\:\rm s}=0.4\:\rm m/s^2$$