document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=7126>Question 7126</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm having trouble trying to figure out how to set up the formula to solve a question asked to me. I was asked to figure out the mph of a skydiver free falling 7000 feet in 45 seconds. If you have any insight to this could you please assist me. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #3978 by </B><A HREF=/tutors/aboutme.mpl?userid=prince_abubu><B>prince_abubu(198)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=prince_abubu><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=3978\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I think they're asking you to convert feet per second to miles per hour. We must begin with some facts and the belief that we can put equivalences in ratios.\r<BR>\n" );
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document.write( "5280 feet = 1 mile ----> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1+mile+%2F+5280+feet+ ALIGN=MIDDLE  ALT=\"+1+mile+%2F+5280+feet+\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+5280+feet+%2F+1+mile+ ALIGN=MIDDLE  ALT=\"+5280+feet+%2F+1+mile+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "3600 seconds = 1 hour ----> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1+hour+%2F+3600+seconds+ ALIGN=MIDDLE  ALT=\"+1+hour+%2F+3600+seconds+\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3600+seconds+%2F+1+hour+ ALIGN=MIDDLE  ALT=\"+3600+seconds+%2F+1+hour+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Step 1: Write the unknown variable x and then the label (which in this case, is miles per hour) on the left side of the equals sign. We are going to set up an equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+_miles%2Fhour+ ALIGN=MIDDLE  ALT=\"+x+_miles%2Fhour+\"   DISABLED_style= \"max-width:90%; height:auto;\" > =\r<BR>\n" );
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document.write( "Step 2: Choose the fraction written above that has miles on the numerator. This is the one that will convert feet to the miles.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+_miles%2Fhour+=+%281+mile%2F5280+feet%29+ ALIGN=MIDDLE  ALT=\"+x+_miles%2Fhour+=+%281+mile%2F5280+feet%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Step 3: Now \"put\" the 7000 feet in 45 seconds ratio that they gave you to begin with, next to the (1 mile/5280 feet) ratio as a multiplication.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+_miles%2Fhour+=+%281+mile%2F5280+feet%29%2A%287000+feet+%2F+45+seconds%29+ ALIGN=MIDDLE  ALT=\"+x+_miles%2Fhour+=+%281+mile%2F5280+feet%29%2A%287000+feet+%2F+45+seconds%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <---- This is called \"forced chain-cancelling multiplication\". We select the next fraction whose unit in the numerator is the same unit as the denominator in the fraction at the (former) end of the multiplication chain.\r<BR>\n" );
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document.write( "Step 4: The next fraction would be the one that has seconds in the numerator to match the seconds unit in the denominator of the (7000 feet/45 seconds) term.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+_miles%2Fhour+=+%281+mile%2F5280+feet%29%2A%287000+feet+%2F+45+seconds%29%2A%283600+seconds%2F+1+hour%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Step 5: Cancel the units that match in the numerator and the denominator. We should be left with miles unit on the top and hour units in the bottom. Straight-up calculate using your calculator. You should finally get somewhere around 106.06 miles per hour. <BR>\n" );
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