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Q.

A massive ball moving with speed v collides head on with a fine ball having mass very much smaller than the mass of the first ball. The collision is elastic. Then immediately after the impact, the second ball will move with a speed approximately equal to

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a

v

b

2v

c

v/3

d

Infinite

answer is B.

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Detailed Solution

v2 = 2u1 – u2 

⇒ v2 = 2v

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A massive ball moving with speed v collides head on with a fine ball having mass very much smaller than the mass of the first ball. The collision is elastic. Then immediately after the impact, the second ball will move with a speed approximately equal to