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प्रश्न
Select the correct alternatives
The correct statement is
विकल्प
Both work and energy have the same units
Potential energy of a body is due to its motion
Kinetic energy of a body is due to its position or state
Kinetic energy can change into potential energy, but potential energy cannot change into kinetic energy.
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उत्तर
Both work and energy have the same units
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संबंधित प्रश्न
Fill in the blank
The S.I.unit of energy is ______
Select the correct alternatives
When we rub our hands
What is potential energy ? State its unit.
What do you mean by conservation of mechanical energy? State the condition when does it hold.
What is energy?
Define the term 'watt'.
- Take two aluminium channels of different lengths.
- Place the lower ends of the channels on the floor and hold their upper ends at the same height.
- Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance.
- At the moment of releasing the balls, which energy do the balls have?
- As the balls roll down which energy is converted into which other form of energy?
- Why do the balls cover the same distance on rolling down?
Note: The question is wrong. It should be "Why do the balls cover the same distance after rolling down"? - What is the form of the eventual total energy of the balls?
- Which law related to energy does the above activity demonstrate? Explain.
Write the type of energy.
When a body falls freely towards the earth, then its total energy
Which one of the following is not the unit of energy?
