Question Detail
Question
Suppose you throw a ball with a mass of 0.40 kg against a brick wall. If it hits the wall moving horizontally to the left at 30 m/s and rebounds horizontally to the right at 20 m/s, find the impulse of the net force on the ball during its collision with the wall.
Correct Answer
Option B is the correct answer.
Detailed Explanation
The impulse is 20 N·s.
Hint
Impulse equals change in momentum: mass × (final velocity - initial velocity), considering direction.