A student is trying to determine the minimum speed, Smin at which a car of mas can will catch air when driving over a bump in the road of radius, r, with a coeffic of friction u. Hint: Solve in terms of variables then plug in. m [kg] Smin [m/s] 900 r [m] 4 4 8 12 16 1800 900 900 900 0000

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Q: linear acceleration magnitude

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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?”