How would the magnitude of the total momentum (sum of the momentum of the two carts) of the two-cart system just before the collision compare to the magnitude of the total momentum of the two-cart system just after the collision?

How would the magnitude of the total momentum (sum of the momentum of the two carts) of the two-cart system just before the collision compare to the magnitude of the total momentum of the two-cart system just after the collision?

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Question

Suppose you have two carts that roll without friction on a level crack, with one cart twice the mass of the other, and the more massive cart crashes into the less massive cart (which was not moving prior to the collision). How would the magnitude of the total momentum (sum of the momentum of the two carts) of the two-cart system just before the collision compare to the magnitude of the total momentum of the two-cart system just after the collision? (Select all that apply)

a) The magnitude of the total momentum would decrease.

b) The magnitude of the total momentum would stay the same.

c) The magnitude of the total momentum would increase.

d) It would depend on if the collision was elastic or inelastic.

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