If the speed of an object decreases to one-half, what happens to its momentum?

It doubles

It remains the same

It decreases to one half

It decreases to one fourth

Look at the formula for momentum:

Momentum = (mass) x (speed).

If the mass doesn't change, then whatever happens to the speed on

one side of the equation, the same thing happens to the momentum

on the other side.

If the speed decreases to one half, then the momentum does too.

C it decreses to one half