A 0.25 kg rubber ball moves towards a rigid wall with speed 2.0 m/s along the +x-direction
PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
A 0.25 kg rubber ball moves towards a rigid wall with speed 2.0 m/s along the +x-direction. After the collision it rebounds along the –x-direction with speed 1.5 m/s. With +x taken as positive, which statement about the ball’s linear momentum is correct?
(a) Its magnitude decreases but its sign remains the same.
(b) Its magnitude remains the same but its sign reverses.
(c) Its magnitude decreases and its sign reverses.
(d) Its magnitude increases and its sign reverses.