How is momentum conserved in a newton's cradle when one steel ball hits the other?

1. both balls have momentum to start, and they share it after the collision.
2. all the momentum starts in one ball, and after the collision, they share it.
3. momentum is not conserved in the steel balls of a newton's cradle.
4. all the momentum starts in one ball, and after the collision, it is all in the other ball.

Both balls have momentum to start,and they share it after collision

Explanation:both balls have momentum to start and they share it after collision

4. All the momentum starts in one ball, and after the collision, it is all in the other ball.

Explanation:

All the momentum starts in the first ball (the one is moving) . When this ball collides with the second ball, the first ball stops but its momentum it is transferred to the second ball, then to the third then fourth until it reaches the very last ball. Only the last ball has momentum now because is the only one moving.

the answer to this question is 60 n

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