Chapter 11-Work and Energy

A spring has ________ when it is compressed or stretched.

potential energy

If a ball is raised at a height h then its potential energy is mgh and when it falls on the ground the ________ will be 0.5mv^2

kinetic energy

________ is capacity to do work.

Energy

No work is done when body moves in _______

uniform velocity

The ________ of an object at a point above the ground is defined as the work done in raising it from the ground to that point against gravity.

gravitational potential energy

A ball has ________, when raised above the ground.

potential energy

________ and energy are two sides of same coin.

work

Work is said to be done when force is applied on object causing it to ____ in direction of applied force.

move

1 Kilo Watt hour of energy is equal to ________ Joule

3\.6X10^6

The water released from the reservoir of the tank possesses_______ energy

kinetic

Power is the rate of doing ______. And its unit is ___________

work,watt

1. Work done by the force can be _____ __,__ _____ and ______.

negative,zero and positive

The work done by the earth on the satellite moving in circular path is _________

zero

_________ is defined as the rate of transfer of energy

power

sum of kinetic energy and potential energy is called________

mechanical energy

work has no _____ __and__ ________ so it is a scalar quantity

magnitude and direction