Question

1. if 2 objects collide and stick together, what will happen to their velocities?

Explanation:

This is an in - elastic collision. According to the law of conservation of momentum, the two objects combine and move with a common velocity. The total momentum before the collision equals the total momentum after the collision. The combined object will have a velocity that is a weighted average of the initial velocities of the two objects based on their masses.

Answer:

They will move with a common velocity determined by the law of conservation of momentum.