Which is the correct unit for speed?

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Multiple Choice

Which is the correct unit for speed?

Speed is how fast something moves, which means it’s a rate: distance covered per unit of time. Since distance is measured in metres and time in seconds, the natural way to express speed is metres per second. Using only seconds would give a moment in time, not a rate, and the other options measure other physical quantities: Newtons are a unit of force, and Joules are a unit of energy. So the correct unit for speed is metres per second.

Speed is how fast something moves, which means it’s a rate: distance covered per unit of time. Since distance is measured in metres and time in seconds, the natural way to express speed is metres per second. Using only seconds would give a moment in time, not a rate, and the other options measure other physical quantities: Newtons are a unit of force, and Joules are a unit of energy. So the correct unit for speed is metres per second.

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