document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=568206>Question 568206</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A 1,500 kg car accelerates from 44 km/h to 80 km/h in 10 s. What was the net force exerted on the car?<BR>\n" );
document.write( "I know that F=ma but I am confused about what to do because it asks for the net force do I add 44 and 88 or subtract the terms? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #366878 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=366878\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First find the acceleration of the car. We have\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE a = \frac{80 kph - 44kph}{10 s} = 3.6 \frac{kph}{s}\"> (kilometers per hour, per second). However we want to convert kilometers per hour to meters per second. 1 kph is roughly .2778 m/s, and it turns out that 3.6 kph/s is exactly 1 m/s^2. So a = 1 m/s^2.\r<BR>\n" );
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document.write( "We use F = ma to obtain\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE F = (1500 kg)(1 \frac{m}{s^2}) = 1500 N\"> </SPAN>\n" );
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