II. Traffic Accident #2: You have arrived at the scene of a two-car accident. You know the following pieces of
information:
.
Car 1 and Car 2 have equal masses of 2,000 kg each.
Car 1's initial momentum was 40,000 kg-m/s to the right; Car 2 wasn't moving.
Car 1 collided with Car 2.
Car 1's final velocity is 10 m/s to the right; Car 2's final velocity is unknown.

3. After the collision, what’s car 2’s final velocity

4. What is their total final momentum?

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