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## Homework Statement

A 0.038-kg pet lab mouse sits on a 0.35-kg air-track cart, as shown in (Figure 1) . The cart is at rest, as is a second cart with a mass of 0.25 kg. The lab mouse now jumps to the second cart. After the jump, the 0.35-kg cart has a speed of v1=0.86m/s.

What is the speed v2 of the mouse and the 0.25-kg cart?

## Homework Equations

1/2m

_{1}v

_{0}

^{2}=1/2m

_{1}v

_{1,f}

^{2}+1/2m

_{2}v

_{2,f}

^{2}

## The Attempt at a Solution

I don't know where to start. I am assuming this is an elastic collision since the carts don't stick together after the collision. Would I use the equation listed above? I just don't know how to start

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