Question

What is the momentum of an object that is moving in a straight line at a speed of 10 m/s and has a mass of 10 kilograms?

A. 10 m/s
B. 100 kg-m/s
C. 100 m/s2

Answer 1

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

`p=mv`
where m is the mass and v the velocity.

For the object in our problem, m=10 kg and v=10 m/s, therefore its momentum is

`p=mv=(10 kg)(10 m/s)=100 kg m/s`
So, the correct answer is B).