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प्रश्न
How is kinetic energy possessed by a moving body measured?
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उत्तर
The kinetic energy possessed by a moving body is measured by the amount of work done by an opposing force in bringing the body to rest from its present state of motion.
संबंधित प्रश्न
State the energy changes in the following case while in use:
a ceiling fan
Explain the principle of producing electricity using the nuclear energy.
Name the form of energy in which potential energy can change.
What happens to the K.E. when
(i) the mass of the body is doubled at a constant velocity and
(ii) the velocity of the body is doubled at constant mass?
State two advantages and disadvantages of using nuclear energy for producing electricity.
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
Give one example when:
Potential energy changes to electric energy.
Match the pairs.
| Group 'A' | Group 'B' | ||
| (1) | Rolling object | (a) | Heat energy |
| (2) | Food | (b) | Atomic energy |
| (3) | Stretched bow | (c) | Kinetic energy |
| (4) | Sunlight | (d) | Potential energy |
| (5) | Uranium |
(e)
|
Chemical energy
|
Find out the types of energy from the following puzzle.
What ts the original source of energy for the electricity produced at a thermal power station?
