Question

A car of mass 500kg is traveling at 20m/s.And slows down in 10s.Calculate the braking force

Answer 1

Given:

$m=500\:\rm kg$

$\Delta v=20\:\rm m/s$

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

The braking force

$$F=ma=m\frac{\Delta v}{\Delta t}=500*\frac{20}{10}=1000\:\rm N$$