30 miles per hour = 13.4112 meters per second
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There are 1609.344 metres in one mile. Therefore, 70 miles per hour is equal to 70 x 1609.344 = 112654.08 metres per hour. There are 3600 seconds in one hour. Therefore, 112654.08 metres per hour is equal to 112654.08/3600 = 31.2928 metres per second.
4.7 metres per second is about 10.5 miles per hour.
Metres per second * 2.2369 = miles per hour.
Rounded to two decimal places, Mach 1 is equal to 761.21 miles per hour. Multiplying this by 1.6 gives us 1217.38 miles per hour.Converting 1217.38 miles per hour to metres per second gives us 544.46 metres per second.
845 miles per hour = 377.75 metres per second, approx.