Question

A car crashes into a wall with an impulse of 40,000 kg.m/s. The collision took 2 seconds. How much force did the car

exert?

Answer 1

20000 N

Step-by-step explanation:

The formula for Impulse is:

F×t= m(v-u)

Isolate force and you get:

F= m(v-u)/t

Impulse is basically the change in momentum and momentum is = mv so mv-mu gives the change in momentum which is impulse.

Plug in the values:

F= 40000/2= 20000 N