Two initially stationary carts, A and B, are pushed across a frictionless horizontal surface by the same horizontal force. Cart B is heavier than Cart A, but both are pushed for the same time. After the push, which cart has the greater final momentum?  (a)They have the same final momentum  (b)Cart B (c) Cart A After the push, which cart has the greater final kinetic energy?  (a)Cart A  (b)Cart B  (c)They have the same final kinetic energy

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