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A body of mass 2 kg moving with a velocity of 3 m/sec collides head on with a body of mass 1 kg  moving in opposite direction with a velocity of 4 m/sec. After collision, two bodies stick together and move with a common velocity which in m/sec  is equal to

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a
1/4
b
1/3
c
2/3
d
3/4

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detailed solution

Correct option is C

m1v1−m2v2=(m1+m2)v⇒2×3−1×4=(2+1) v⇒v=23 m​/​s

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