A moving body of mass m and velocity 3 km/hour collides with a rest body of mass 2m and sticks to it. Now the combined mass starts to move. What will be the combined velocity?
Text Solution
Verified by ExpertsThe correct answer is:
C
: Mass of body 
; Velocity of first body 
km/hour; Mass of second body in rest 
and velocity of second body 
After combination, mass of the body
From the law of conservation of momentum, we get 
or 
or 
km/hour.
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