Advertisements
Advertisements
Question
If the speed of a body is halved, what will be the change in its kinetic energy?
Advertisements
Solution
Kinetic energy of a body is directly proportional to the square of velocity. So, the kinetic energy will become `(1/4)` the initial kinetic energy when velocity is halved .
APPEARS IN
RELATED QUESTIONS
Write an expression for the kinetic energy of an object.
An object of mass, m is moving with a constant velocity, v. How much work should be done on the object in order to bring the object to rest?
A freely falling object eventually stops on reaching the ground. What happens to its kinetic energy?
State two factors on which the kinetic energy of a moving body depends.
When an arrow is shot from a bow, it has kinetic energy in it. Explain briefly from where does it get its kinetic energy?
A body falls freely under gravity from rest. Name the kind of energy it will possess on reaching the ground.
What is the kinetic energy of a body of mass 1 kg moving with a speed of 2 m/s?
When a ball is thrown inside a moving bus, does its kinetic energy depend on the speed of the bus? Explain.
Explain the difference between potential energy and kinetic energy.
When a bell fixed on a cycle rings, then the energy conversion that takes place is ______.
