Chapter 11-Work and Energy
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16 Terms
1
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A spring has ________ when it is compressed or stretched.
potential energy
2
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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
3
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________ is capacity to do work.
Energy
4
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No work is done when body moves in _______
uniform velocity
5
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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
6
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A ball has ________, when raised above the ground.
potential energy
7
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________ and energy are two sides of same coin.
work
8
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Work is said to be done when force is applied on object causing it to ____ in direction of applied force.
move
9
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1 Kilo Watt hour of energy is equal to ________ Joule
3\.6X10^6
10
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The water released from the reservoir of the tank possesses_______ energy
kinetic
11
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Power is the rate of doing ______. And its unit is ___________
work,watt
12
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1. Work done by the force can be _____ __,__ _____ and ______.
negative,zero and positive
13
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The work done by the earth on the satellite moving in circular path is _________
zero
14
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_________ is defined as the rate of transfer of energy
power
15
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sum of kinetic energy and potential energy is called________
mechanical energy
16
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work has no _____ __and__ ________ so it is a scalar quantity
magnitude and direction
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