GCSE Physics (AQA)

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Calculating Speed

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Forces Forces and motion

Calculating Speed

2:28 Distance, Displacement and Speed
Spec 4.5.6.1.2
Previous Speed & Fitness Next Uniform Acceleration Equation
  • Speed is calculated as the distance traveled divided by time.
  • Important equation: Speed = Distance / Time.
  • Larger speeds cover more distance in less time.
  • In symbols: Speed (V) = Distance (S) / Time (T).
  • Speed is assumed to be a fixed value.
  • Time is measured in seconds, distance in meters, and speed in meters per second.
  • Example: Helicopter travels at 90 meters per second.
  • Calculate time to travel 45 kilometers.
  • Convert 45 kilometers to 45,000 meters.
  • Rearrange equation to solve for time: Time = Distance / Speed.
  • Substitute values: Time = 45,000 meters / 90 meters per second = 500 seconds.

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