Which of the following statements is not one of Newton’s Laws on motion? a. In the absence of an unbalanced force, an object moves at constant velocity b. For any force there is always an equal but opposite reaction force. c. The force and the acceleration of a body are towards the same direction.

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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?”