A trolley of mass 300 kg carrying sand 200 kg in it is

Last updated: 6/25/2023

A trolley of mass 300 kg carrying sand 200 kg in it is moving uniformly with speed of 40 km h on a frictionless track After a while sand starts leaking out of a hole on the track What is the speed of the trolley after entire sand is leaked out 1 24 km h 2 30 km h 3 66 km h 4 40 km h