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A ball of mass 2 kg moving with 4 m/s co...

A ball of mass 2 kg moving with 4 m/s collides elastically with a stationary ball. If it continues to move in original direction with 1/4th of its original velocity. Find velocity of centre of mass of system

A

3 m/s

B

2/5 m/s

C

5/2 m/s

D

2 m/s

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Knowledge Check

  • A body of mass m kg collides elastically with another body at rest and then continues to move in the original direction with one half of its original speed. What is the mass of the target body ?

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    m kg
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    2/3 m kg
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    m/3 kg
    D
    m/2 kg

  • A body of mass 3 kg collides elastically with another body at rest and then continues to move in the original direction with one half of its original speed. What is the mass of the target body?

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    B
    `1.5kg`
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    D
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  • A ball of mass m moving with velocity v collides elastically with another ball of identical mass coming from the opposite direction with velocity 2v. Their velocities after collisions are-

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    `-v, 2v`
    B
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