Question Detail
Question
A ball of mass 200 g, moving with a speed of 2.5 m/s in a direction perpendicular to a vertical wall, hits the wall and rebounds without any energy loss. If the ball was in contact with the wall for 0.25 s and it rebounds in a horizontal direction, find the velocity of rebound of the ball.
Correct Answer
Option D is the correct answer.
Detailed Explanation
Since the collision is elastic and without energy loss, the speed remains the same but direction reverses. Initial velocity is perpendicular to wall, so rebound velocity is opposite direction: -2.5 m/s.
Hint
Elastic collision with wall reverses velocity component perpendicular to wall.