force of 145.0 Newtons was applied by Jing to Nescy whose mass is 80.0 kg and is just resting at the edge of a pool. What is the horizontal acceleration produced?   2.2 m/s2   181 m/s2   1.81 m/s2   11600 m/s2

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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?”