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प्रश्न
Fill in the blank
An object falling freely from the roof of a multistorey building has ________ and _________ energy when halfway down the building.
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उत्तर
An object falling freely from the roof of a multistorey building has potential energy and kinetic energy when halfway down the building.
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संबंधित प्रश्न
State two factors on which the kinetic energy of a moving body depends.
State the changes in form of energy while producing hydro electricity.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving cricket ball
State the energy changes in the following case while in use:
an electric cell in a circuit
State two characteristic which a source of energy must have.
Name the energy changes for the following:
bicycle brakes
Name the form of energy in which potential energy can change.
Give three examples of bodies possessing kinetic energy.
A ball of mass 50 g falls from a height of 2m and rebounds from the ground to 1.6 m. Find:
(i) The potential energy possessed by the ball when initially at rest.
(ii) The kinetic energy of the ball before it hits the ground.
(iii) The final potential energy of the ball.
(iv) The loss in kinetic energy of the ball on collision. (Take: g = 10N kg−1)
