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23 ft/s ~= 15.7 mph

1 hour = 3600 seconds

1 mile = 5280 ft

⇒ 23 ft/s = 23 x 3600 ft/h

= 23 x 3600 ÷ 5280 mph

= 23 x 15/22 mph

~= 15.682 mph

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14y ago

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