Speed

Just how fast is 5 metres per second?

On foot

5 m/s

18 km/hkilometres per hour
11.185 mphmiles per hour
Mach 0.014577Mach
1.6678 × 10⁻⁸ cspeed of light
Equal time
DISTANCE IN ONE SECOND5 m in 1 s5 m in 1 s
01
5 metres per second5 m/sSpeed · definition
02
Pedal-powered rail trolley5 m/sDefined operating speed · defined specimen · range 3 m/s–7 m/s
Each track shows distance covered in the same second. The small illustrations identify the movers; their sizes are schematic.

A little perspective

The speed of 5 metres per second and the defined operating speed of Pedal-powered rail trolley are approximately the same.

Measurements, assumptions & sources +

5 metres per second

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

NIST — SI conversion factors

Pedal-powered rail trolley

A defined four-seat pedal rail trolley 2.4 m long, 250 kg ready to ride and travelling at 5 m/s. Commercial rail bikes differ; length excludes couplers and the mass excludes riders.

Rail Explorers — Rail bikes

The marked defined operating speed is calibrated. Unmeasured illustration details are representative.

Measurement details

Why these numbers?

The visual compares speed with defined operating speed. The records below preserve each value’s basis and caveats.

5 metres per second

5 m/s

Speed · definition

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

Pedal-powered rail trolley

5 m/s

Defined operating speed · defined specimen · range 3 m/s–7 m/s

A defined four-seat pedal rail trolley 2.4 m long, 250 kg ready to ride and travelling at 5 m/s. Commercial rail bikes differ; length excludes couplers and the mass excludes riders.

Comparing
Speed ↔ Defined operating speed
Relative size
The two selected measurements are approximately equal.

How to read the visual

The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.

  • Pedal-powered rail trolley uses a 5 m/s central value within a recorded range of 3 m/s–7 m/s.
  • Pedal-powered rail trolley is labelled defined specimen; treat the displayed value as a comparison anchor rather than false precision.
  • The recorded ranges overlap, so the ordering can vary even though the central values differ.

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