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Class 7
Chapter 8 Class 7 - Measurement of Time and Motion (Curiosity)

SI Unit of Speed

Last updated at May 4, 2026 by

  • The SI unit of speed is metre/second (m/s) .
  • This comes from distance in metres and time in seconds.
  • Another common unit is kilometre/hour (km/h) .
  • This is used when distance is in km and time is in hours.

๐Ÿ“‹ NCERT Question 1

Calculate the speed of a car that travels 150 metres in 10 seconds. Express your answer in km/h.
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๐Ÿ“‹ NCERT Question 5

The fastest galloping horse can reach the speed of approximately 18 m/s. How does this compare to the speed of a train moving at 72 km/h?
View Answer →
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