Optimally, Mach 2 is 1,552.4141 mph. This measurement is twice the speed of a moving object relative to the speed of sound in a surrounding medium when placed under ambient conditions. More » Science Measurements

The speed of light is about 670,616,629 mph, and one could travel round the earth 7 1/2 times in just a second with this speed. For another perspective, the average distance from the Earth to the Moon is 238,854 miles, a... More » Science Physics Motion & Mechanics

Knots are the unit of measurement that describes the speed of boats and airplanes. One knot is equal to roughly 1.151 miles per hour. With this conversion factor, 18 knots is equal to roughly 20.718 miles per hour. More » Science Measurements
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Both kilometers per hour and miles per hour (mph) are units to measure speed. A measurement of average speed takes the distance traveled and divides it by the time it took to travel that distance. Because both speeds giv... More » Science Measurements

Since 1 mile equals 1.609 kilometers, 330 kilometers per hour can be converted to miles per hour by dividing 330 by 1.609. The answer is approximately 205.1 miles per hour. More » Science Measurements

Converting meters per second to miles per hour requires the use of dimensional analysis, which is the analysis of quantities and units which are related to and dependent upon other units of measurement. Either distance o... More » Science Measurements

Wild turkeys run up to 25 miles per hour, or fly at speeds of 35 to 55 miles per hour. Although they primarily walk, a startled turkey often takes flight to escape danger. Generally, domesticated birds are slower and hea... More » Science Measurements