Advertisements
Advertisements
प्रश्न
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
उत्तर
- 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
संबंधित प्रश्न
Write an expression for the kinetic energy of an object.
Certain force acting on a 20 kg mass changes its velocity from 5 m s-1 to 2 m s-1. Calculate the work done by the force.
If the speed of a car is halved, how does its kinetic energy change?
If the speed of a body is halved, what will be the change in its kinetic energy?
A horse and a dog are running with the same speed. If the weight of the horse is ten times that of the dog, What is the ration of their kinetic energies?
Which of the following does not posses the ability to do work not because of motion?
The energy possessed by a cricket ball bowled by a player is ______.
What is energy of motion? Give examples.
When a bell fixed on a cycle rings, then the energy conversion that takes place is ______.
If the mass as well as the velocity of a body is doubled then the kinetic energy of the body ______ the initial kinetic energy.