If he were to try to jump without giving that downward push, there would be no opposite push from the ground, and two things would happen: (1) shaun would not get very high off the ground, and (2) shaun’s board would not stay pressed against his feet, having no upward force applied to it. the passage above reflects the principles of a. newton’s first law of motion c. newton’s second law of motion b. newton’s third law of motion d. all of the above

Newton’s third law of motion.

The first and second are not it because Those are when an external force is brought upon on an object. The third law is correct because every action in nature there is an opposite affect making it equal. That law applies here. Sorry if I explained that bad, but I know the answer is right.

the force represented by vector a is normal force. if the hockey puck is moving to the right, when it is hit with a significant force by the hockey stick the puck will move off in a different direction. correct on edge.