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प्रश्न
Is potential energy a vector or a scalar quantity?
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उत्तर
Potential energy is a scalar quantity as it has only magnitude.
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संबंधित प्रश्न
The potential energy of a freely falling object decreases progressively. Does this violate the law of conservation of energy? Why?
Two bodies of same masses are placed at heights h and 2h. Compare their gravitational potential energy.
A body at a height possesses ______.
A body falls freely under gravity from rest. Name the kind of energy it will possess at the point from where it falls.
What happens to the potential energy of a body when its height is doubled?
Give one example each of a body possessing : (i) kinetic energy, and (ii) potential energy.
Explain by an example what is meant by potential energy. Write down the expression for gravitational potential energy of a body of mass m placed at a height h above the surface of the earth.
If we increase the velocity of a car moving on a flat surface to four times its original speed, its potential energy ______.
How much energy is gained by a box of mass 20 kg when a man, raises the box by 0.5 m in order to place it inside the bus? (g=10 m/s-2)
Potential energy and heat energy are the two forms of mechanical energy.
