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Grade: 9
        
Hello ….…
  A body of mass m moving with a constant velocity v hits another body of the same mass at rest and sticks to it. The velocity of the compound body after collision is:
one year ago

Answers : (1)

Piyush Kumar Behera
385 Points
							
See in this case we have to conserve the total mechanical energy...
initial momentum=mv+m(0)=mv
after the collision occurs the total mass of the system is 2m
so final momentum is 2mv’ ,where v’ is the final velocity.
so conserving the mechanical energy 
2mv’=mv
=>v’=v/2
please upvote this solution to encourage me,so that i can answer you rest questions
one year ago
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