BBC Learning Zone Clips

CLIP 23

Calculating the speed of a car

Calculating the speed of a car
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Key Info
  • Calculating the speed of a car
  • Duration: 04:00
  • The presenter talks to a policeman about how the speed of a car is calculated. They look at how fixed marks and known distances are used to calculate speed. This is done by measuring the time it takes a vehicle to travel the known distance, and then using the formula speed = distance / time to calculate the speed. This same method is used on the two pictures from a speed camera which show how many fixed marks a vehicle passes in half a second.
  • Subject:

    Science

       Topic:

    Phys: Forces - Motion

  • Keywords: calculating speed, speed, distance, time, measurement
Ideas for use in class
  • Application of speed. Possible speed calculations
Background details
  • Clip language : English
  • Aspect ratio : 4x3

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