Question

The chart show the masses and velocities of two colliding objects that stick together after a collision.



According to the law of conservation of momentum, what is the momentum of the object after the collision?

4,500 g · m/s
1,750 g · m/s
1,500 kg · m/s
3,000 kg · m/s

Answer 1

I can't see the chart you mention. Could you either upload the chart/image or tell me the two masses and their velocities?

How to get the answer once you give those numbers:
- Convert masses in grams to kilograms (1000 g = 1 kg).
- Compute total momentum before collision: p = m1·v1 + m2·v2 (take care of signs for direction).
- After they stick together the momentum is the same (conservation of momentum), so p_after = p_before.
- Match that value (with correct units) to one of the choices.

If you post the two masses and velocities I’ll compute which choice is correct.