## What is Kinetic energy?

In physics, the * kinetic energy* (KE) of an object is the

*that it has due to its motion. It is*

**energy***defined*as the work needed for an object of a known

**mass**to

**accelerate**to a given velocity.

## Kinetic energy equation

To calculate **Kinetic energy** we write the equation like this.

$E_k = { 1 \over2} mv {^2}$

## Kinetic energy demo

In this tutorial you will learn how to calculate the **energy** stored in a moving object.

## Chilled practice question

Calculate the **Kinetic energy store** in a car with a **mass** of 850 **Kg** moving at a **velocity** of 3.5 **m/s**.

## Frozen practice question

A meteorite has 8000 **J** of **Kinetic energy**, calculate its **mass** if it has a **velocity** of 20 **m/s**

## Science in context

Anything that is moving has energy in its** kinetic energy store**.

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