Velocity is a vector quantity that specifies the time rate of change of displacement with respect to a reference frame. If the reference frame is not inertial, the velocity is often designated "relative velocity".
|1 mph||=||1.609 km/h||1 ms-1||=||3.2808399 fts-1|
|1 in s-1||=||0.0254 ms-1||1 ft s-1||=||0.3048 ms-1|
|1 km h-1||=||0.2778 ms-1||1 ft min-1||=||0.00508 ms-1|
|1 knot||=||0.5144 ms-1|
1km h-1 = 1 km/h = 1000 m/h = 1000/3600 m/s = 0.2778m/s
Note: if using this type of conversion within a calculation then best to use 1000/3600 in the calculation rather than the value round to 4 decimal points.
|Fast walk||1.79 ms-1 (4 mph)|
|Stephenson′s Rocket||13.4 ms-1 (30 mph)|
|Steam train speed record||56.3 ms-1 (126 mph)|
|Fastest boat (Spirit of Australia 1978)||141.95 ms-1 (317.6 mph)|
|Land speed record (Thrust SSC 1997)||341.0 ms-1 (763 mph)|
|Concorde||597 ms-1 (1336 mph)|
|Fastest plane (SR71 BlackBird)||980 ms-1 (2193 mph)|
|Escape velocity at surface of the Moon||2.38x103 ms-1|
|Escape velocity at surface of the Earth||1.12x104 ms-1|
|Escape velocity at surface of the Sun||6.18x105 ms-1|
|Speed of light in vacuo||2.998x108 ms-1|
We would like to thank Peter W Kruh°ffer for pointing out the error in our conversion table from km h-1 to ms-1
See also: Acceleration, Angular Velocity, Approximate Speed, Displacement, Escape Velocity, Hypervelocity, Instantaneous Speed, Kilometres Per Hour, Length, Miles Per Hour, SI Units, Straight-Line Speed, Velocity Time Profile.
Subjects: Classical Mechanics