Advertisements
Advertisements
प्रश्न
Find out the form of energy possessed by the following thing.
Water falls
Advertisements
उत्तर
Kinetic Energy
APPEARS IN
संबंधित प्रश्न
The kinetic energy of an object of mass m moving with a velocity of 5 m s−1 is 25 J. What will be its kinetic energy when its velocity is doubled? What will be its kinetic energy when its velocity is increased three times?
An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy? If the object is allowed to fall, find its kinetic energy when it is half-way down.
A cyclist doubles his speed. How will his kinetic energy change: increase, decrease or remain same?
Write the expression for the kinetic energy of a body explaining the meaning of the symbols used.
A body falls freely under gravity from rest. Name the kind of energy it will possess on reaching the ground.
Two bodies have masses in the ratio 5 : 1 and their kinetic energies are in the ratio 125 : 9. Calculate the ratio of their velocities.
If the speed of a body is halved, what will be the change in its kinetic energy?
Find the momentum of a body of mass 100 g having a kinetic energy of 20 J.
A bullet of mass 15 g has a speed of 400 m/s. What is its kinetic energy? If the bullet strikes a thick target and is brought to rest in 2 cm, calculate the average net force acting on the bullet. What happens to the kinetic energy originally in the bullet?
What are the uses of mechanical energy?
