Work, Energy an...

If a man increase his speed by 2 m/s, his K.E. is doubled, the original speed of the man is

The potential energy of a particle varies with distance x as shown in the graph. The force acting on the particle is zero at

A body of mass 1.5 kg slide down a curved track which is quadrant of a circle of radius 0.75 meter. All the surfaces are frictionless. If the body starts from rest, its speed at the bottom of the track is ..... ( g = 10 m/s²)

A body initially at rest undergoes one dimensional motion with constant acceleration. The power delivered to it at time t is proportional to.....

An electric motor develops 5 KW of power. How much time will it take to lift a water of mass 100 kg to a height of 20 m ? ( g = 10 m/s²)

Bansi does a given amount of work in 30 sec. Jaimeen does the same amount of work... in 15 sec. The ratio of the output power of Bansi to the Jaimeen is....

A body of mass m is accelerated uniformly from rest to a speed v in time T. The instantaneous power delivered to the body in terms of time is given by.....

1 kg apple gives 25 KJ energy to a monkey. How much height he can climb by using this energy if his efficiency is 40%. (mass of monkey = 25 kg and g = 10 m/s²)