A moving body of mass m and velocity 3km/h collides with a rest body o – McqOptions

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1.	A moving body of mass m and velocity 3km/h collides with a rest body of mass 2m and strikes to it. Now the combined mass starts to move. What will be the combined velocity?
A.	3km/h
B.	4km/h
C.	1km/h
D.	2km/h
Answer» D. 2km/h

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