Question

A billiard ball moves with 3 kg⋅m/s
of momentum and strikes three other billiard balls. What is the total momentum of the balls after the collision?(1 point)
Responses

3 kg⋅m/s

3 kilograms times meters per second

more than 3 kg⋅m/s

more than 3 kilograms times meters per second

less than 3 kg⋅m/s

less than 3 kilograms times meters per second

It depends on the mass of each ball.
It depends on the mass of each ball.

Answer 1

3 kg·m/s

Explanation: Momentum is conserved in collisions (assuming no external forces). The total momentum of the system after the collision equals the total momentum before, so it remains 3 kg·m/s.