Question: A 1000 kg cart is rolling to the right at 5.0 m/s. A 70 kg man is standing on the right end of the cart.

A 1000 kg cart is rolling to the right at 5.0 m/s. A 70 kg man is standing on the right end of the cart. What is the speed of the cart if the man suddenly starts running to the left with a speed of 10 m/s relative to the cart?

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