A trolly of mass 200kg moves with a uniform speed of 36 km`//`h on a
Channel: Doubtnut
Date: 2020-07-26

A trolly of mass 200kg moves with a uniform speed of 36 km`//`h on a frictionless track. A child of mass 20kg runs on the trolly from one end to the other (10m away) with a  speed of `4m//s` relative to the trolly in a direction opposite to the trolly's motion and jumps out of the trolly. How much has teh trolly moved from the time the child begins to run ?