Write the expression for the kinetic energy of a body explaining the meaning of the symbols used.

Answer in Brief

Kinetic energy =1/2 Mv²
Where m is the mass of body v is the speed of body.

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Chapter 4: Energy - Short/Long Answer questions [Page 78]

Chapter 4 Energy
Short/Long Answer questions | Q 26 | Page 78

What is the kinetic energy of an object?

Define the term kinetic energy. Give one example of a body which possesses kinetic energy.

The kinetic energy of a body is the energy by virtue of its ______.

How does the kinetic energy of a moving body depend on its (i) speed, and (ii) mass?

Find the momentum of a body of mass 100 g having a kinetic energy of 20 J.

What do you understand by the kinetic energy of a body?

Find out the form of energy possessed by the following thing.

A rolling ball

What are the uses of mechanical energy?

What is energy of motion? Give examples.

If the mass as well as the velocity of a body is doubled then the kinetic energy of the body ______ the initial kinetic energy.