A girl having mass of 35 kg sits on a trolley of mass 5 kg. The trolley is given an initial velocity of 4m//s by applying a force. The trolley comes to rest after traversig a distance of 16m. (a) How much work is done on the trolley ? (b) How much work is done by the girl ?

A girl having mass of 35 kg sits on a trolley of mass 5 kg. The trolley is given an initial velocity of 4m//s by applying a force. The trolley comes to rest after travelling a distance of 16m. (a) How much work is done on the trolley ? (b) How much work is done by the girl ?

A girl of mass 35 kg is sitting in a trolley of mass 5 kg. By applying the force on the trolley, it has given the velocity 4ms^(-1) . Trolley comes to rest after covering the distance 16 m, then (1) How much work is done on the trolley? (2) How much work is done on the girl?

A boy of mass 60 kg running at 3//s jumps on to a trolley of mass 140 kg moving with a velocity of 1.5m//s in the same direction . What is their common velocity?

If a person moves a trolley for a distance of 10 m with a force of 50 , then the work done is:

A man of mass 60kg jumps from a trolley of mass 20kg standing on smooth surface with absolute velocity 3m//s . Find velocity of trolley and total energy produced by man.

A man of mass 60kg jumps from a trolley of mass 20kg standing on smooth surface with absolute velocity 3m//s . Find velocity of trolley and total energy produced by man.

An object of mass 4 kg falls from rest through a vertical distance of 20 m and reaches with velocity of 10 (m)//(s) on ground. How much work is done by air friction?

A person pushes a 72 kg patient on a 15 kg trolley, producing an acceleration of 0.60m//s^2 (a) How much work does the person do by pushing the patient and the trolley through a distance of 2.5m ? Assume the trolley moves without friction. (b) How far must the person push the trolley to do 140J of work. (c) Does the work done by the person depends on the speed of the trolley?