Two carts with a total kinetic energy of 250 J collide on a level track. Afterwa

Question

Two carts with a total kinetic energy of 250 J collide on a level track. Afterwards, the total kinetic energy of the carts is found to be 100 J. We can conclude that:

one or both of the carts was damaged during the collision.

an nonzero external net force acted on the carts during their collision.

momentum wasn't conserved in this collision.

this was an inelastic collision.

one or both of the carts was damaged during the collision.

an nonzero external net force acted on the carts during their collision.

momentum wasn't conserved in this collision.

this was an inelastic collision.

Explanation / Answer

this was an inelastic collision

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