- The
**speed** of an object is a measure of **how fast** it is moving.

**Speed (m/s) = Distance travelled (m) divided by Time taken (s)**

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- The
**acceleration** of an object is the **rate** at which its **velocity changes**. It is a measure of how quickly an object **speeds up** or **slows down.**

**Acceleration (m/s2) = Change in velocity (m/s) divided by Time taken for change (s)**

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**Kinetic energy** - energy an object has because of its **movemen**t. It depends on the **mass** and **speed** of the object.

**Kinetic energy (J) = 1/2 x Mass (kg) x Speed (m/s)2**

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