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संबंधित प्रश्न
What is nuclear energy?
Can a body possess energy even when it is not in motion ? Explain your answer with an example.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
An arrow shot out of a bow.
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.
A metal ball of mass 2kg is allowed to fall freely from rest from a height of 5m above the ground.
What the kinetic energy of the ball just before it hits the ground ?
What do you understand by the kinetic energy of the body?
What is dissipation of energy?
State the energy changes which take place when:
Photographic film is exposed to sunlight.
A ball of mass 200 g falls from a height of 5 m. What will be its kinetic energy when it just reaches the ground? (g = 9.8 m s−2)
Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.
