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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A bullet of mass 0.01 kg and travelling at a speed of 500 m/s strikes a block of mass 2 kg which is suspended by a string of length 5m. The centre of gravity of the block is found to raise a vertical distance of 0.2 m. What is the speed of the bullet after it emerges from the block?

A bullet of mass 0.01 kg and travelling at a speed of 500 m/s strikes a block of mass 2 kg which is suspended by a string of length 5m. The centre of gravity of the block is found to raise a vertical distance of 0.2 m. What is the speed of the bullet after it emerges from the block?

A glass ball collides with a smooth horizontal surface (xz plane) with a velocity V=ai-bj. If the coefficient of restitution of collision be e the velocity of the ball just after the collision will be