Work and Energy...

The work done is dependent on following quantities:

Work done  =

Work done is said to be positive if the applied force and the displacement are in ............ direction.

When an arrow is released from a bow, potential energy changes into kinetic energy.

According to law of conservation of energy the total energy of the universe is:

An object in a given position can have a certain potential energy with respect to one level and a different value of potential energy with respect to another level.

Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it. How much work is done by the men in lifting the box? $$(g=10 \:m \:s^{-2})$$

The gravitational potential energy possessed by a body is by virtue of its _________.

According to the law of conservation of energy:

A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process, the potential energy of the car