document.write( "Question 41864: speed of a dropped object. If we neglect the resistnace of air, the (downward) speed of an object t seconds after being dropped is given by v=32t feet per second. How many seconds does it take an object to reach a downward speed of 100 miles per hour? recall that there are 5280 feet in one mile, since you will need to express 100 mph in feet per second. \n" ); document.write( "
Algebra.Com's Answer #27092 by fractalier(6550)\"\" \"About 
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Okay...we can convert mph to fps via the relationship
\n" ); document.write( "60 miles per hour = 88 feet per second so that
\n" ); document.write( "100 miles per hour = 146 2/3 feet per second.
\n" ); document.write( "Thus we solve for t and get
\n" ); document.write( "t = v/32
\n" ); document.write( "t = (146 2/3) / 32
\n" ); document.write( "t = 55/12 sec = 4 7/12 sec
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