Kinetic Energy
Kinetic energy is the energy an object possesses due to its motion. It is a form of energy that an object has because of its motion and mass. The kinetic energy of an object depends on its mass and its speed.
Formula for Kinetic Energy
The formula for calculating kinetic energy is:
KE = (1/2) * m * v2
Where:
- KE = kinetic energy (in joules)
- m = mass of the object (in kilograms)
- v = velocity of the object (in meters per second)
Unit of Kinetic Energy
The SI unit of kinetic energy is the joule (J).
Factors Affecting Kinetic Energy
The kinetic energy of an object depends on two factors:
- Mass: The greater the mass of an object, the greater its kinetic energy, assuming the speed is constant.
- Speed: The kinetic energy of an object increases with the square of its speed. This means that doubling the speed will quadruple the kinetic energy.
Applications of Kinetic Energy
Kinetic energy is involved in various everyday activities and phenomena, such as:
- Running
- Cycling
- Driving a car
- Flying a plane
- Swinging a pendulum
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