Question

A soccer ball has a mass of 0.45 kg. A player kicks it, making it accelerate at 25 m/s² toward the goal. What force does the ball apply back onto the player&#39;s foot?</p><p></p>(1 point)

55.56 N away from the goal

11.25 N toward the goal

11.25 N away from the goal

0.018 N away from the goal

Answer 1

F = ma = 0.45 kg × 25 m/s² = 11.25 N. By Newton's third law, this force on the foot is opposite the ball's acceleration, so 11.25 N away from the goal.