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प्रश्न
Fill in the blank with suitable word :
The ability of a body to do work is called __________. The ability of a body to do work because of its motion is called __________.
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उत्तर
The ability of a body to do work is called energy. The ability of a body to do work because of its motion is called kinetic energy.
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संबंधित प्रश्न
State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.
What kind of energy is possessed by the following?
A stone kept on roof-top _______________
What kind of energy is possessed by the following?
A stretched rubber band _____________
Define the term 'energy' of a body. What is the SI unit of energy.
Water stored in a dam possesses :
Name the device or machine which convert :
Electrical energy into light energy.
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
What is the meaning of the symbol kWh? What quantity does it represent?
A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g = 10 m s–2)
A body of mass 10 kg falls from a height of 20 m to 8 m. Calculate:
- the loss in potential energy of the body, and
- the total energy possessed by the body at any instant? (Take g = 10 m s-2)
