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OpenStudy (anonymous):
A trolley of mass 1000 kg moving at 10 m/s collides and hooks onto another identical trolley at rest. What is the velocity of both the trolleys together?
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OpenStudy (anonymous):
and why?
OpenStudy (anonymous):
use conservation of angular miomentum
OpenStudy (anonymous):
reply if you got it
OpenStudy (anonymous):
is the answer 5 m/s? @nkaadi1995
OpenStudy (anonymous):
yes, the total momentum remains the same (1000)(10) = (2000)(5)
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OpenStudy (anonymous):
why does the total momentum remain the same? @douglaswinslowcooper
OpenStudy (anonymous):
there is conservation of momentum if there is no external force acting on the system. The collision involves only internal forces.
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