Question

What will be the change in momentum caused by a net force of 120N acting on an object for 2 seconds?

Answer 1

Answer:

240 Ns

Explanation:

The momentum of an object is the product of its mass and its velocity:

$p=mv$

where m is the mass of the object and v its velocity.

According to Newton's second Law of motion, the change in momentum of an object is related to the force applied by it by the equation:

$F=\frac{\Delta p}{\Delta t}$

where

F is the force exerted on the object

$\Delta p$ is the change in momentum

$\Delta t$ is the time elapsed

In this problem:

F = 120 N is the force exerted on the object

$\Delta t=2 s$ is the time elapsed

Therefore, the change in momentum of the object is:

$\Delta p=F\Delta t=(120)(2)=240 Ns$