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प्रश्न
What do you understand by the kinetic energy of the body?
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उत्तर
The kinetic energy of a body is the energy possessed by the body by virtue of its state of motion.
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संबंधित प्रश्न
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A piece of stone placed on the roof.
Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.
State two advantages of using wind energy for generating electricity.
MULTIPLE CHOICE TYPE:
The ultimate source of energy is:
(a) wood
(b) wind
(c) water
(d) sun
Name the energy changes for the following:
bicycle brakes
Write the type of energy possessed in the following case:
A moving cricket ball.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
Give one example when:
Heat energy changes to kinetic energy.
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
