Work, Power and EnergyHard
Question
A body P moving with a velocity of 20 km/sec collides with other body Q of the same mass at rest. If after collision P comes to rest, the velocity of the body Q will be :-
Options
A.30 km/sec.
B.20 km/sec.20 km/sec.
C.10 km/sec.
D.40 km/sec.
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