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Question
What do you understand by the kinetic energy of the body?
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Solution
The kinetic energy of a body is the energy possessed by the body by virtue of its state of motion.
RELATED QUESTIONS
Name the type of energy (kinetic or potential) possessed by the following:
A moving cricket ball.
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is at the ground.
A body of mass m is moving with a velocity v. Write the expression for its kinetic energy.
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.)
What is meant by the renewable and non-renewable sources of energy? Distinguish between them giving two examples of weach.
State two disadvantages of producing electricity from solar energy.
State two disadvantages of using wind energy for generating electricity.
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
State the energy changes which take place when:
A magnesium ribbon burns in air.
Use your brain power!
Why do tablets of camphor decrease in size day by day?
