JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A ball which is at rest is dropped from a height metre. As it bounces off the floor its speed is 80% of what it was just before touching the ground. The ball then rises to nearly a height

Answer: (D)

Solution

Speed before impact: . Speed after bounce: . Rebound height .

Question ID VK-151924