Question 452507
In units:
( feet / sec ) x ( miles / feet ) x ( sec / min ) x ( min / hr ) = mi / hr
With data:
{{{ ( 2400 / 140 ) * ( 1 / 5280 ) * ( 60 / 1 ) * ( 60 / 1 ) = (2400*3600) / (140*5280) }}}
{{{  (2400*3600) / (140*5280) = 8640000 / 739200 }}}
{{{ 8640000 / 739200 = 11.69 }}}
The speed would be 11.69 mi/hr