Question

what is speed ? how will you calculate speed ? give different units of speed.​

Answer 1

Answer:

Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a given amount of time, while a slow-moving object covers a relatively small amount of distance in the same amount of time.

Answer 2

Explanation:

the speed (commonly referred to as v) of an object is the magnitude of the change of its position; it is thus a scalar quantity.

$speed \: = \frac{distance}{time}$

Units of speed include:

• metres per second (symbol m s−1 or m/s), the SI derived unit;
• kilometres per hour (symbol km/h);
• miles per hour (symbol mi/h or mph);
• knots (nautical miles per hour, symbol kn or kt);
• feet per second (symbol fps or ft/s);
• Mach number (dimensionless), speed divided by the speed of sound;
• in natural units (dimensionless), speed divided by the speed of light in vacuum (symbol c = 299792458 m/s).