How much work should be done on a bicycle of mass 20 kg to increase its speed from `2 ms^(-1)` to `5ms^(-1)` ? (Ignore air resistance and friction).

What force should be applied on a body of mass 500 kg to change its velocity from 4 ms^(1) to 6 ms^(-1) in one second ?

What force should be applied on a body of mass 500 kg to change its velocity from 4 ms^(1) to 6 ms^(-1) in one second ?

How much work is done on a body of mass 1 kg whirling on a circular path of radius 5m?

A constant force acting on a body of mass of 5 kg change its speed from 5ms^(-1) "to" 10ms^(-1) in 10 s without changing the direction of motion. The force acting on the body is

A constant force acting on a body of mass of 5 kg change its speed from 5ms^(-1) "to" 10ms^(-1) in 10 s without changing the direction of motion. The force acting on the body is

Certain force acting on a 20 kg mass changes its velocity from 5ms^(-1) to 2ms^(-1) . Calculate the work done by the force.