(II) The CM of an empty 1250-kg car is 2.40 m behind thefront of the car. How far from the front of the car will theCM be when two people sit in the front seat 2.80 m fromthe front of the car, and three people sit in the back seat3.90 m from the front? Assume that each person has a massof 65.0 kg.

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Q: What is the coefficient of kinetic friction?

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”