If the car strikes the barrier with a force of 3,250 N, how much resistance force does the barrier provide? [___] N

By Newton’s third law, forces between two interacting objects are equal in magnitude and opposite in direction. If the car pushes on the barrier with a force of 3,250 N, the barrier pushes back on the car with a resistance force of 3,250 N. Therefore, the correct choice is 3,250 N.

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