Suppose that the two carts are joined with a spring. The Red cart is held by the left hand at a fixed position, and the Blue cart is pulled to the right. Which force is the action force and which is the reaction force?   Group of answer choices 1-The force exerted by the Red cart is the action force, and that exerted by the Blue cart is the reaction force. 2-Neither are the reaction force. They are both action forces. 3-The force exerted by the Blue cart is the action force, and that exerted by the Red cart is the reaction force. 4-one of the two can be taken as the action force, and the other will become the reaction force.

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: