Driving theory questions

You are driving at 50 km/h. How many metres does the car travel in 1 second?

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Colour codes for the figures (easier to keep track of them)
Current speed 50 km/h
Time 1 second
Metres per second (to be calculated) X m/s


Convert km/h to m/s:

  • 50 / 3.6 = 14 m/s

How many metres do you travel?

  • 14 * 1 = 14 metres

3.6 is a fixed figure for converting km/h to m/s. It is difficult to divide by 3.6 in your head. A tip is to first divide by 3 and then by 4. You then take a number that is between the answers you get (the margins between the answer options are so large that closer accuracy is not required).

Method 2

Strike the zero in km/h:

  • 50 = 5

Convert km/h to m/s:

  • 5 * 3 = 15 m/s

How many metres do you travel?

  • 15 * 1 = 15 metres

Multiplied by 3 is a fixed figure for making approximate conversions from km/h to m/s.

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