![]() ![]() ![]() In the SI (metric) system, it is measured in meters per second (m/s). The dimensions for speed are distance/time. Where d is the distance moved by the object (or its "displacement") and t is the time it takes to move through that distance. The average velocity (v) of an object moving a The speed or velocity of an object is calculated by a simple mathematical formula: When an object (such as an aircraft) is moving horizontally as well as vertically, a distinction is made between its " forward speed" and its "climbing speed."īoth speed and velocity are measured in the same physical units, but speed does not contain the element of direction that velocity has. Vehicles often have a speedometer to measure their speed.
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