Advertisements
Advertisements
प्रश्न
Explain the difference between potential energy and kinetic energy.
Advertisements
उत्तर
| S. No. | Potential Energy | Kinetic Energy |
| 1. | It is possessed by a body by virtue of its configuration and position. | It is possessed by a body by virtue of its motion. |
| 2. | It exists in several forms, including gravitational potential energy and electric potential energy, but work is not completed until it is converted into kinetic energy. | It only exists in one form and does not need to be converted into another in order to perform tasks. |
| 3. | Gravitational potential energy = mgh | Kinetic energy = `1/2 mv^2` |
| 4. | Potential energy can be negative. | Kinetic energy cannot be negative. |
| 5. | Example: A book kept on a shelf has potential energy. | Example: A moving car possesses kinetic energy. |
APPEARS IN
संबंधित प्रश्न
What is the kinetic energy of an object?
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?
Name the unit of physical quantity obtained by the formula `(2K)/v^2` Where K: kinetic energy, v: linear velocity
State two factors on which the kinetic energy of a moving body depends.
A car is moving with a speed of 15 km h-1 and another identical car is moving with a speed of 30 km h-1. Compare their kinetic energy.
The kinetic energy of a body is the energy by virtue of its ______.
A body falls freely under gravity from rest. Name the kind of energy it will possess on reaching the ground.
On what factors does the kinetic energy of a body depend?
How fast should a man of 50 kg run so that his kinetic energy be 625 J?
What is the kinetic energy of a body of mass 1 kg moving with a speed of 2 m/s?
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?
If an object has 0 momentum, does it have kinetic energy? Explain your answer.
The energy possessed by a cricket ball bowled by a player is ______.
When stored water falls down, potential energy of water is converted into ______.
A car of mass 120 kg is moving at a speed 18 km/h and it accelerates to attain a speed of 54 km/h in 5 seconds. Calculate:
- the work done by the engine.
- the power of the engine.
When a bell fixed on a cycle rings, then the energy conversion that takes place is ______.
