ock of mass m = 2kg slides across a flat surface with friction present. If the block starts with a speed v = 3m/s, and slides 2.3m before coming to rest, what was the magnitude of the constant friction force that brought it to a stop? Group of answer choices 5.45 N

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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?”