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8 December, 08:47

Which is faster and why 90.0 miles per hour or 121 feet per second

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  1. 8 December, 08:51
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    90 miles per hr:

    1 mile = 5280 ft ... so 90 miles = 90 (5280) = 475200 ft

    1 hr = 3600 seconds

    475200/3600 = 132 ft per second < = = this is equal to 90 miles per hr

    the 90 miles per hr is faster then 121 ft per sec.
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