# Speed and velocity

Source: https://projectgcse.co.uk/physics/forces_motion/speed_and_velocity

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- Speed is the change of movement of an object.
- Velocity is the speed of an object in a certain direction.
- The most common unit for both speed and velocity is m/s which shows how many metres an object has moved in one second.
- Average speed = distance moved / time taken.
- Average velocity = distance moved in a certain direction / time taken.