A person is pushing two boxes placed side by side with each other. What is the acceleration caused by the applied force if the net force is 200.57 N, the coefficient of kinetic friction of the boxes is 0.085 and the sum of the mass of the boxes is 88.89 kg? Is it possible to have one of the boxes generate an applied force of 140.7 N, if yes, what is the mass of the other box? Show an Illustration.

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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?”