document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=982883>Question 982883</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The position of a projectile P shot directly upwards from the surface of the earth is a=117t-9.8t^2<BR>\n" );
document.write( "	What is the initial velocity of the projectile?<BR>\n" );
document.write( "	Find the average velocity over the interval from t=5 to t=10 seconds?<BR>\n" );
document.write( "	Find the instantaneous velocity at t=5 and t=10 secs?<BR>\n" );
document.write( "	Find the maximum height reach by the projectile?<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #603679 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=603679\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The position of a projectile P shot directly upwards from the surface of the earth is a=117t-9.8t^2<BR>\n" );
document.write( "What is the initial velocity of the projectile?<BR>\n" );
document.write( "Ans: 117 units/sec<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "Find the average velocity over the interval from t=5 to t=10 seconds?<BR>\n" );
document.write( "Ans: ave vel = [f(10)-f(5)]/[10-5] = [1170-980 -(585-245)]/[5] = -30 units/sec<BR>\n" );
document.write( "--------------------------------------<BR>\n" );
document.write( "Find the instantaneous velocity at t=5 and t=10 secs?<BR>\n" );
document.write( "a'(x) = 117-19.6t<BR>\n" );
document.write( "a'(5) = 117-19.6*5 = 19 units/sec<BR>\n" );
document.write( "a'(10) = 117 - 196 = -79 units/sec<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Find the maximum height reach by the projectile?<BR>\n" );
document.write( "Solve a'(t) = 0<BR>\n" );
document.write( "117-19.6t = 0<BR>\n" );
document.write( "t = 5.97<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Ans:: a=117t-9.8t^2<BR>\n" );
document.write( "a(5.97) = 349.21 units<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "Ans: f(5.97) =  </SPAN>\n" );
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