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प्रश्न
A pebble is thrown up. It goes to a height and then comes back on the ground. State the different changes in form of energy during its motion.
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उत्तर
The stone continues to rise in height as it is hurled. Kinetic energy falls while potential energy rises. The body has 0 KE and solely P.E. at its peak. Now, as the stone moves closer to the ground, its height decreases and P.E. also decreases. However, as speed increases, KE. increases, and at zero height on the ground, P.E. is zero and K.E. converts to heat, sound, etc.
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संबंधित प्रश्न
Name the type of energy (kinetic or potential) possessed by the following:
Water flowing in a river.
State different forms of potential energy and give one example of each.
Name the form of mechanical energy, which is put to use.
Select the renewable and non-renewable sources of energy from the following:
Wind
What is solar energy?
Explain the principle of producing electricity using the nuclear energy.
State the energy changes which take place when:
A car moves up a hill.
State the energy changes which take place when:
A stone projected vertically upwards, returns back to the thrower.
Give one example when:
Electric energy changes to potential energy.
Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.
