C-7,A (trolley + child) of total mass 200 kg is moving with a uniform speed of 36 km/h on a frictionless track.The child of mass 20 kg starts running on the trolley from one end to the other (10 m away) with aspeed of 10 ms relative to the trolley in the direction of the trolley's motion and jumps out of the trolleywith the same relative velocity. What is the final speed of the trolley? How much has the trolley movedfrom the time the child begins to run and just before jump?

C-7,A (trolley + child) of total mass 200 kg is moving with a uniform

1.	C-7,A (trolley + child) of total mass 200 kg is moving with a uniform speed of 36 km/h on a frictionless track.The child of mass 20 kg starts running on the trolley from one end to the other (10 m away) with aspeed of 10 ms relative to the trolley in the direction of the trolley's motion and jumps out of the trolleywith the same relative velocity. What is the final speed of the trolley? How much has the trolley movedfrom the time the child begins to run and just before jump?
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