The sandbag is placed in the trolley, which travels at a constant speed of 27 km/h. There is no system that acts as an external force. There will be no external force operating on the system even if the sand begins to leak out of the bag. As a result, the trolley’s speed will remain constant. It will be 27 kilometres per hour.
A trolley of mass 
carrying a sandbag of 
is moving uniformly with a speed of 
on a frictionless track. After a while, the sand starts leaking out of a hole on the floor of the trolley at the rate of 
What is the speed of the trolley after the entire sandbag is empty?
carrying a sandbag of is moving uniformly with a speed of on a frictionless track. After a while, the sand starts leaking out of a hole on the floor of the trolley at the rate of What is the speed of the trolley after the entire sandbag is empty?A trolley of mass carrying a sandbag of is moving uniformly with a speed of on a frictionless track. After a while, the sand starts leaking out of a hole on the floor of the trolley at the rate of What is the speed of the trolley after the entire sandbag is empty?
carrying a sandbag of is moving uniformly with a speed of on a frictionless track. After a while, the sand starts leaking out of a hole on the floor of the trolley at the rate of What is the speed of the trolley after the entire sandbag is empty?