Question: What is the momentum of a 5 kg object moving at a velocity of 4 m/s?

Options:

1. 20 kg·m/s
2. 15 kg·m/s
3. 10 kg·m/s
4. 25 kg·m/s

Correct Answer: 20 kg·m/s

Solution:

Momentum p = mv = 5 kg × 4 m/s = 20 kg·m/s.