Question

A 1,500.0 kg car hits a brick wall with a force of 60.0 N in 1.75 seconds. What is the change in the momentum of the car? N • s

Answer 1

Given:

A 1,500.0 kg car hits a brick wall with a force of 60.0 N in 1.75 seconds.

To find:

Change in momentum of car ?

Calculation:

• Force is defined as the rate of change of momentum. So, change in momentum will be equal to force and time.

$\therefore F = \dfrac{\Delta P}{t}$

$\implies\Delta P = F \times t$

$\implies \Delta P =60 \times 1.75$

$\implies \Delta P =105 \: Ns$

So, the change in momentum is 105 Ns.