A billiard ball moving with a speed of 5 m/s collides with an identical ball, originally at rest. If the first ball stop dead after collision, then the second ball will move forward with a speed of
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a
10 m s-1
b
5 m s–1
c
2.5 m s-1
d
1.0 m s-
answer is B.
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Detailed Solution
The two bodies will exchange their velocities after collision.