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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 10 - COM, Momentum and Collision > A body of mass 2kg makes an elastic head – on collision another body at rest and continues to move in the original direction with one fourth of its original speed . The mass of the second body which collides with the first body is

A body of mass 2kg makes an elastic head – on collision another body at rest and continues to move in the original direction with one fourth of its original speed . The mass of the second body which collides with the first body is

A bomb explodes in air when it has a horizontal speed of 10m/s. It breaks into two pieces A and B of mass ratio 1:2. If A goes vertically up at a speed of 40m/s the speed of B is