1.

If a ball of mass 0.4 kg moving with a velocity of 3ms^(-1) collides elastically with another ball of mass 0.6 kg which is at rest, find their velocities after collision.

Answer»

`-0.6 MS^(-1), 2.4 ms^(-1)`
`2.4 ms^(-1), -0.6 ms^(-1)`
`0.6 ms^(-1), -2.4 ms^(-1)`
`-2.4 ms^(-1), 0.6 ms^(-1)`

ANSWER :A


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