document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=23951>Question 23951</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Help please somebody\r<BR>\n" );
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document.write( "I'm having a problem with the following question\r<BR>\n" );
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document.write( "The distance of a body from a point is given by   s=xsin(wt+alpha). Show that the velocity and acceleration are given by    v=x cos(wt+alpha)and   a=-w^2s\r<BR>\n" );
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document.write( "Point me in the right direction please\r<BR>\n" );
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document.write( "Cheers Paul </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #12724 by </B><A HREF=/tutors/aboutme.mpl?userid=khwang><B>khwang(438)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=khwang><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=12724\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Given distance s=xsin(wt+alpha). <BR>\n" );
document.write( " Show that the velocity and acceleration are <BR>\n" );
document.write( " given by v=x cos(wt+alpha)and a=-w^2s <BR>\n" );
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document.write( " v = ds/dt (derivative of s wrt t)<BR>\n" );
document.write( "  = x w cos (wt+alpha)(by chain rule)\r<BR>\n" );
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document.write( " a = dv/st = -x w^2 sin(wt+alpha)= -w^2 s\r<BR>\n" );
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document.write( " something wrong with your typing about v.\r<BR>\n" );
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document.write( " Kenny </SPAN>\n" );
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