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?

Question

anonymous · Answer

and why?

anonymous · Answer

use conservation of angular miomentum

anonymous · Answer

reply if you got it

anonymous · Answer

is the answer 5 m/s? @nkaadi1995

anonymous · Answer

yes, the total momentum remains the same (1000)(10) = (2000)(5)

anonymous · Answer

why does the total momentum remain the same? @douglaswinslowcooper

anonymous · Answer

there is conservation of momentum if there is no external force acting on the system. The collision involves only internal forces.