Question

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

Answer 1

240 Ns

Step-by-step 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=(\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`