Two train carts are moving in the same direction, such that one cart catches up with and collides with the second cart. That is, a 480-kg train cart moving at 14.4 m/s hits from behind a 570-kg train cart that is moving at 13.3 m/s in the same direction. If the new speed of the 570-kg cart is 14.0 m/s after the collision, what is the speed of the lighter cart after the collision

14m/s

Explanation:

According to the law of conservation of momentum, the sum of momentum of the bodies before collision is equal to the sum of momentum of the bodies after collision. The two bodies move with the same velocity after collision.

If the new speed of the 570-kg cart is 14.0 m/s after the collision, then the speed of the lighter cart (480kg cart) will also be 14.0m/s since both carts moves with a common velocity after their collision according to the law.

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible