Which of the following Newton’s laws of motion can explain why a ball thrown at a wall rebounds?
3rd law of motion
Newton's third law of motion states that to every action there is an equal and opposite reaction, and the two forces act on different bodies.
When the ball hits the wall, it exerts a force on the wall (action). The wall exerts an equal force back on the ball in the opposite direction (reaction), which pushes the ball back.
The first law deals with inertia and the second law relates force to the rate of change of momentum; neither explains the opposite push from the wall, so the rebound is explained by the third law.
Hence, 3rd law of motion.
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