Mechanics

# Kinetic Energy: 5 Best Examples of K.E in Daily Life

This is complete Post About K.E and Examples of Kinetic Energy.
So If You want to learn in detail about K.E in detail, You”ll love the Visual Examples in this post.
Let’s Dive Right in.
Contents:

• Kinetic Energy Definition
• K.E equation
• Kinetic Energy Examples
• Lot’s more

## What is Kinetic Energy?

Kinetic energy is defined as ” The energy possessed by an object due to its motion.”It derived from the Greek word kinetikos which means motion. It depends on the mass and velocity of an object.  SI Unit of K.E is the joule. It is a Scalar quantity. Kinetic energy formula is expressed as: where m is the mass of the body moving with velocity v. if the mass is given in kilogram and velocity v is given in meter/second then kinetic energy comes out in joules. one joule is the energy when a force of one newton displaces a body through one meter.

## What are some examples of kinetic energy?

Here are some Kinetic Energy Examples:

## • when you are walking or running your body is exhibiting kinetic energy.
• A bicycle or skateboard in motion possesses kinetic energy.
• Running water has kinetic energy and it is used to run water mills.
• Moving air has K.E and is used to derives windmills and pushes sailing boats, similarly, a bullet fired from a gun has kinetic energy and can penetrate into a target because of its K.E.
• Remember, kinetic energy is the energy of motion. The faster the body move,s the more the kinetic energy is formed as a process of movement . for example when a bus speeds up going down a hill, the potential energy of bus converts into K.E. There is not much potential energy at the bottom of the hill, but there is a great amount of kinetic energy.

Similarly, a basketball shows kinetic energy, the K.E is proportional to the balls mass and square of its velocity . to throw the same ball twice as fast, a player does more work and transfers four times the energy.

## What are the different types of kinetic energy? • Mechanical energy
• Electrical energy
• Light energy
• Sound energy
• Thermal energy

Detail of these types of kinetic energy given below:

• ### Thermal energy

Heat is a form of energy given out by hot bodies. A large amount of heat is obtained by burning fuel. Heat is also produced when motion is opposed by frictional forces.

## Examples of thermal energy

• The foods we take provide us heat energy.
• The sun is the main source of heat energy.
• ### Electrical energy

Electricity is one of the widely used forms of energy. Electrical energy can be supplied easily to any desired place through wires. We get electrical generators. These electric generators are run by hydropower, thermal power or nuclear power.

## Examples of electrical energy

• ### Sound energy

When you knock at the door, you produce sound. A sound is a form of energy. It is produced when a body vibrates; such as vibrating diaphragm of a drum, vibrating strings, of a sitar and vibrating air column of wind instruments such as flute pipe, etc..

• ### Light energy

Light is a form of energy. The sun is the major source of light for us. Light helps plants to make food in the process of photosynthesis.

## Kinetic energy equation

Consider a body of mass “m” which is projected up in the gravitational field with a velocity “V” , after attaining a maximum height “h” , the body comes to rest. The work done by the body against the gravitational force is given by :
Work is done by the body = Force × displacement Video of  Derivation of K.E:

Related topics

 Physics Related Links Types of forces Coulomb’s law formula Sources of Energy Schrodinger time-dependent wave equation Simple Harmonic motion Difference between ac and dc current Ampere’s law Screw Gauge

Some external sources:

• https://en.wikipedia.org/wiki/Kinetic_energy
• http://www.physicsclassroom.com/class/energy/Lesson-1/Kinetic-Energy

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