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प्रश्न
What do you understand by the kinetic energy of a body?
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उत्तर
A body in motion is said to possess the kinetic energy. The energy possessed by a body by virtue of its state of motion is called the kinetic energy.
संबंधित प्रश्न
State the energy change in the following device while in use:
A glowing electric bulb.
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
Name the type of energy (kinetic or potential) possessed by the following:
A stone at rest on the top of a building.
Name the type of energy (kinetic or potential) possessed by the following:
Water flowing in a river.
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
State the energy changes in the following case while in use:
an electric bulb
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
A boy sits and stands repeatedly. Draw a graph showing the variation of potential energy with time.
You might have seen some beautiful fireworks during Diwali. It is an example of the transformation of ______ energy into ______ energy.
Can you tell?
What are the various forms of energy?
