Miles per hour is a unit of speed, expressing the number of international miles covered per hour. The common abbreviation in everyday use is mph, although mi/h, using the SI method of expressing derived units, is sometimes used, especially in the United States. The preferred SI unit for velocity is m/s, although km/h is often used as a replacement for mph.
Both milesperhour and knots is a speed which is the number of units of distance that is covered for a certain amount of time.
To do this problem easily, one can multiply the number of milesperhour that the train is moving by the number of feetperhour that = 1 mph.
Since the speed of sound varies with the density of air (or whatever material it is transmitted through), one needs to determine the density of the air the aircraft is flying through.
Both milesperhour and knots is a speed which is the number of units of distance that is covered for a certain amount of time.
To do this problem easily, one can multiply the number of milesperhour that the train is moving by the number of feetperhour that = 1 mph.
Since the speed of sound varies with the density of air (or whatever material it is transmitted through), one needs to determine the density of the air the aircraft is flying through.
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