document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1186086>Question 1186086</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1) A pistol that fires a signal flare gives it an initial velocity (muzzle<BR>\n" );
document.write( "velocity) of 125 m/s at an angle of 55.00(degrees) above the horizontal. You<BR>\n" );
document.write( "can ignore air resistance. (Ignore air resistance.)<BR>\n" );
document.write( "(a) What is the magnitude of the horizontal and vertical velocity<BR>\n" );
document.write( "component of the signal flare?<BR>\n" );
document.write( "(b) What is the flare’s maximum height and the distance from its<BR>\n" );
document.write( "firing point to its landing point?<BR>\n" );
document.write( "(c) How long does the signal flare stays in the air? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #817228 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=817228\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1) A pistol that fires a signal flare gives it an initial velocity (muzzle<BR>\n" );
document.write( "velocity) of 125 m/s at an angle of 55.00(degrees) above the horizontal. You<BR>\n" );
document.write( "can ignore air resistance.<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "(a) What is the magnitude of the horizontal and vertical velocity<BR>\n" );
document.write( "component of the signal flare?<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Horiz= 125*cos(55)<BR>\n" );
document.write( "Vert = 125*sin(55)<BR>\n" );
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document.write( "(c) How long does the signal flare stays in the air?<BR>\n" );
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document.write( "Using 9.8 m/sec/sec for gravity:<BR>\n" );
document.write( "t = 125*sin(55)/9.8 seconds rising, same time falling<BR>\n" );
document.write( "---> 125*sin(55)/4.9 seconds =~ 20.897 seconds.<BR>\n" );
document.write( "============================<BR>\n" );
document.write( "(b) What is the flare’s maximum height<BR>\n" );
document.write( "The average vertical speed is 1/2 the vert component of the launch speed,<BR>\n" );
document.write( "= 125*sin(55)/2<BR>\n" );
document.write( "Max height = (125*sin(55)/2)*20.897 =~ 1069.86 meters<BR>\n" );
document.write( "================<BR>\n" );
document.write( " and the distance from its firing point to its landing point?<BR>\n" );
document.write( "= (flight time)*125*cos(55)\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );