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## Homework Statement

Two identical objects A and B of mass M move on a one-dimensional, horizontal air track. Object B initially moves to the right with speed V0. Object A initially moves to the right with speed 3V0, so that it collides with object B. Friction is negligble. Determine the total momentum of the system of the two objects. Express answers in terms of M and V0.

## Homework Equations

P=mv

## The Attempt at a Solution

I got an answer,but i would like verification that it's right.

I did...

Pa=(Ma)(Va) Pb=(Mb)(Vb)

Pa=m(3V0) Pb=m(V0)

Add them together....

m(3V0) + m(V0)

and get...:surprised

2m + 4v0