Question 1004806
One revolution is  {{{2*pi*(7.5)}}}


{{{2400(rev/minute)*((2*pi*(7.5))/1)(inches/rev)}}}----------for inches per minute


{{{2400(rev/minute)*((2*pi*(7.5))/1)(inches/rev)(1/12)(feet/inch)(1/60)(minutes/seconds)}}}---------for feet per second


{{{((2400*2*pi*(7.5))/(12*60))(feet/second)}}}-------feet per second



Continue simplifying.
{{{((40*2*pi*7.5)/(12))}}}


{{{(40*pi*7.5)/6}}}


{{{(20*pi*7.5)/3}}}


{{{150*pi/3}}}


{{{50pi}}}---------feet per second