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9th CBSE
IMPORTANT
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What are the various energy transformation that occur when you are riding a bicycle?

Important Questions on Work, Energy and Power

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9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 3>Q 9
A certain household has consumed 250 units of energy during a month. How much energy is this in Joules?
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9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 3>Q 10
A freely falling object eventually stops on reaching the ground. What happens to its kinetic energy?
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9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>CLASS ASSIGNMENT 3>Q 12
A body is falling from a height h. After it has fallen h2, it will possess :
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9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>NCERT Exemplar Questions>Q 1
When a body falls freely towards the Earth, then its total energy:
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9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>NCERT Exemplar Questions>Q 2
A car is accelerated on a levelled road and attains a velocity four times of its initial velocity. In this process the potential energy of the car :
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9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>NCERT Exemplar Questions>Q 3
In case of negative work, the angle between the force and displacement is :
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9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>NCERT Exemplar Questions>Q 4
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both spheres are simultaneously dropped from a tower. When they are 10 m above the ground, then they have the same:
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9th CBSE
IMPORTANT
Physics>Chapter 5 - Work, Energy and Power>NCERT Exemplar Questions>Q 5
A girl is carrying a school bag of mass 3 kg on her back and moved 200 m on a levelled road. The work done against the gravitational force would be : (g=9.8 m s-2)