If you stand next to a wall on a frictionless skateboard and push the wall with a force of 40 N, how hard does the wall push on you? If your mass is 80 kg, show that your acceleration is 0.5 m/s2.

Newton's third law states that “Every action there is equal and opposite reaction “ The force exerted by the person is action force and the force exerted by wall on the person which is reaction force. So if you...