Advertisements
Advertisements
Question
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
Advertisements
Solution
- The energy of a body in motion is called its kinetic energy.
- It is defined as follows:
Kinetic energy of a body is the energy possessed by it due to its state of motion. Actually, it is the work done on the body bringing it to the state of motion. - In short form, it is written as K.E. or K.
- Example: In a swinging pendulum moving to and fro, the bob has the kinetic energy.
APPEARS IN
RELATED QUESTIONS
What is the kinetic energy of an object?
Two toy-cars A and Bof masses 200 g and 500 g respectively are moving with the same speed. Which of the two has greater kinetic energy?
A ball of mass M is moving with a speed v. What is its kinetic energy?
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 of mass 10 kg is moving with a velocity 20 m s-1. If the mass of the body is doubled and its velocity is halved, find:
- the initial kinetic energy, and
- the final kinetic energy.
A body of mass 60 kg has the momentum 3000 kg m s-1. Calculate:
- the kinetic energy.
- the speed of the body.
Which of the following does not posses the ability to do work not because of motion?
Find out the form of energy possessed by the following thing.
A rolling ball
When stored water falls down, potential energy of water is converted into ______.
If the mass as well as the velocity of a body is doubled then the kinetic energy of the body ______ the initial kinetic energy.
