A box with a mass of (18.2 + A) kg is pulled across a floor using a horizontal force of (48.1 + B) N. If there is a friction force of (24.2 + C) N between the box and the floor, what is the acceleration of the box? Calculate the answer in m/s2 and rounded to three significant figures. A=8 B= 78 C=20

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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?”