Advertisements
Advertisements
प्रश्न
What is the kinetic energy of an object?
उत्तर
Kinetic energy is the energy that an object has because of its motion. The kinetic energy of an item moving at a specific velocity equals the effort required to attain that velocity.
The energy an object possesses due to its motion is called kinetic energy.
Kinetic energy (ke) = `1/2 mv^2`
Where m = mass of the object
v = velocity of the object
APPEARS IN
संबंधित प्रश्न
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?
Name the unit of physical quantity obtained by the formula `(2K)/V^2` Where k: kinetic energy, V: Linear velocity
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 bullet of mass 50 g is moving with a velocity of 500 m s-1. It penetrated 10 cm into a still target and comes to rest. Calculate:
- the kinetic energy possessed by the bullet, and
- the average retarding force offered by the target.
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?
Derive the formula for the kinetic energy of an object of mass m, moving with velocity v.
The kinetic energy of a body of mass 4 kg and momentum 6 Ns will be
When the speed of a moving object is doubled, then its kenetic energy ______.
When a bell fixed on a cycle rings, then the energy conversion that takes place is ______.
