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A ball B of mass m is lying at rest on t...

A ball B of mass m is lying at rest on the top surface of a smooth horizontal table 5 m high. Another moovin ball A of same mass make an elastic colision with B slides off the table and strikes the floor at a horizonatal distance of 10 m from the table. Then select the correct alternatives (s). `[g=10m//s^(2)]`

A

The velocity of the ball A befor collisionis 5 m/s

B

The kinetic energy of the ball B at the time when it strikes yhe ground is (mx100) J

C

the velocity of the ball A before collision is 10 m/s

D

The kinetic energy of the ball B at the time when it strikes the ground is (50xm) J

Text Solution

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The correct Answer is:
C,D
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