Question

A 2 kg cart traveling 0.3 m/s runs into a 4 kg cart at rest. What is the momentum of each cart before the

collision?

A. The small cart has a momentum of 0 kg · m/s and the large cart has a momentum of
0.6 kg . m/s.
B. The small cart has a momentum of 0.6 kg · m/s and the large cart has a momentum of
0 kg . m/s.
C. The small cart has a momentum of 0 kg · m/s and the large cart has a momentum of
2.4 kg . m/s.
D. The small cart has a momentum of 0.6 kg · m/s and the large cart has a momentum of
1.2 kg. m/s.

Answer 1

The small cart has a momentum of 0.6 kg ⋅ m/s and the large cart has a momentum of 0 kg ⋅ m/s

I just took the test.

1. 0.6 kg and 0 kg
2. p=mv
3. 100 kg * m/s
4. The train cars move together in the direction the large car was moving
5. M1V1 i + M2V2 f = M1V1 f +m2 v2 f
6. elastic collision, because the law of conservation of momentum was followed.
7. The ratio of useful energy output to energy input.
8. 80%