document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1127955>Question 1127955</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am getting frustrated trying to figure this out.  Can someone please break down the steps?\r<BR>\n" );
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document.write( "Solve.&#8203; (Use 4.9tsquared+v0t=&#8203;s.)<BR>\n" );
document.write( "a) A bolt falls off an airplane at an altitude of 500 m. Approximately how long does it take the bolt to reach the&#8203; ground?\r<BR>\n" );
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document.write( "&#8203;b) A ball is thrown downward at a speed of 40 &#8203;m/sec from an altitude of 500 m. Approximately how long does it take the ball to reach the&#8203; ground? \r<BR>\n" );
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document.write( "c) Approximately how far will an object fall in 6 &#8203;sec, when thrown downward at an initial velocity of 40 &#8203;m/sec from a&#8203; plane?\r<BR>\n" );
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document.write( "&#8203;a) It takes the bolt ________sec m/sec to reach the ground.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #744425 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=744425\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> olve.&#8203; (Use 4.9tsquared+v0t=&#8203;s.)<BR>\n" );
document.write( "a) A bolt falls off an airplane at an altitude of 500 m. Approximately how long does it take the bolt to reach the&#8203; ground?<BR>\n" );
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document.write( "there is no upward velocity, the ground = 0, therefore<BR>\n" );
document.write( "-4.9t^2 + 500 = 0<BR>\n" );
document.write( "-4.9t^2 = -500<BR>\n" );
document.write( "t^2 = -500/-4.9<BR>\n" );
document.write( "t^2 = 102.04<BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28%28102.04%29%29 ALIGN=MIDDLE  ALT=\"sqrt%28%28102.04%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = 10.1 sec for the bolt to hit the ground when dropped by the plane<BR>\n" );
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document.write( "&#8203;b) A ball is thrown downward at a speed of 40 &#8203;m/sec from an altitude of 500 m. Approximately how long does it take the ball to reach the&#8203; ground?<BR>\n" );
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document.write( "thrown downward it's -40 m/sec<BR>\n" );
document.write( "-4.9t^2 - 40t + 500 = 0<BR>\n" );
document.write( "use the quadratic formula; a=-4.9; b=-40; c=500<BR>\n" );
document.write( "the positive solution<BR>\n" );
document.write( "t = 6.8 sec for the ball to reach the ground when thrown downward<BR>\n" );
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document.write( "c) Approximately how far will an object fall in 6 &#8203;sec, when thrown downward at an initial velocity of 40 &#8203;m/sec from a&#8203; plane?<BR>\n" );
document.write( "4.9(36) + 40(6)  = 416.4 meters in  6 sec<BR>\n" );
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document.write( " </SPAN>\n" );
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