It varies with air temperature, pressure, humidity, and density, and it's completely
different in other substances other than air.
For normal conditions in comfortable air near sea-level, I use the figure of 343 meters/second.
The standard (SI) unit for any speed is meter/second.
Sound travels at 340.29 metres per second in air at sea level.
The speed of sound in dry air, under normal temperature and pressure is 343 metres per second.
No atmospere or air on the moon, therefore no sound.
at the speed of sound, 768 mph, it would take 891,837 years.
-- The distance that light travels in some amount of time is expressed in units of distance. -- The time that it takes light to cover some amount of distance is expressed in units of time. -- The speed of light is expressed in units of speed . . . distance/time
No way! There is vacuum where no sound can travel.
Mach 5, 5 times faster than the speed of sound!
Mahoo
You use exactly the same instruments to measure speed in the metric system as you use in any other system. For example, a speedometer, or a distance measuring device and a stopwatch. The difference is that these devices are calibrated in metric units, instead of old-fashioned units.
300 million meters per second
km/hr is a standard measure of speed in metric units. The speed of a train is usually quoted in km/hr or miles/hr, depending on the whether metric or Imperial/US units are being used, which varies from country to country.
Metric units include millimeters, centimeters, decimeters, and meters.
metric units are used for everything in Canada
SI and metric are the same units.
The mass of a beetle in metric units is 5 metric units no joke!
"Metric conversion" refers to the change from English units of measurement to metric units.
Speed is measured in metres per second (or kilometres per hour), and length is measured in metres.
Japan use Metric units to Km/H or kilometers per hour.
9,899 metric units