A billiard ball moves with 3 kg⋅m/s

Question

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

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.

more than 3 kg⋅m/s
more than 3 kilograms times meters per second

Answer 1

The total momentum of a closed system before a collision is equal to the total momentum of the system after the collision, according to the law of conservation of momentum.

In this case, before the collision, the system has a momentum of 3 kg⋅m/s from the moving billiard ball. The other billiard balls are initially at rest, so their momentum is 0.

After the collision, the total momentum of all the balls combined will still equal the initial momentum:

• Total momentum after the collision = momentum before the collision = 3 kg⋅m/s.

Therefore, the correct response is:

3 kg⋅m/s.