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प्रश्न
How is kinetic energy possessed by a moving body measured?
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उत्तर
The kinetic energy possessed by a moving body is measured by the amount of work done by an opposing force in bringing the body to rest from its present state of motion.
संबंधित प्रश्न
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:
Water flowing in a river.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
State four ways for the judicious use of energy.
Name the energy changes for the following:
pendulum
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 ?
Is it possible that a body may possess energy even when it is not in motion?
State the energy changes which take place in Electricity is obtained from solar energy.
Give one example when:
Kinetic energy changes to heat energy.
For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?
