document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=357092>Question 357092</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, i need help with those questions am practicing but i dont understand how to work out the rearrangement etc. please show your working out clearly many thanks,\r<BR>\n" );
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document.write( "1.	The speed of a car after t seconds is given by the formula v= u + at where u is the starting speed in metres per second (m s-¹) and a is the acceleration in metres per second per second (ms-2).\r<BR>\n" );
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document.write( "a)	A car joins a motorway at a speed of 25 ms-1 and accelerates at 0.65 ms -² for 12 seconds. Find its speed at the end of this time.<BR>\n" );
document.write( "b)	Rearrange this formula to make the subject (i) u (ii) t\r<BR>\n" );
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document.write( "2.	if a ball is thrown up in the air at a velocity of v, the height it reaches is given by h = V2/2g            \r<BR>\n" );
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document.write( "    Where g is the acceleration due to gravity.<BR>\n" );
document.write( "a)	Find the height reached by a ball thrown up at a velocity of 15 ms-1.<BR>\n" );
document.write( "b)	B) Rearrange this formula to make the subject v. \r<BR>\n" );
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document.write( "3.  A formula for converting temperature is C=5/9(F- 32)<BR>\n" );
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document.write( "Where C is the temperature in degree Celsius and F is the temperature in degrees Fahrenheit<BR>\n" );
document.write( "a)An old recipe gives the oven temperature 375° F. Covert this temperature to Celsius.<BR>\n" );
document.write( "b)Rearrange this formula to make the subject F. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #255005 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=255005\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1. The speed of a car after t seconds is given by the formula v= u + at where u is the starting speed in metres per second (m s-¹) and a is the acceleration in metres per second per second (ms-2). <BR>\n" );
document.write( "a) A car joins a motorway at a speed of 25 ms-1 and accelerates at 0.65 ms -² for 12 seconds. Find its speed at the end of this time.<BR>\n" );
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document.write( "v = u + at<BR>\n" );
document.write( "v = 25 m/s + 0.65/s^2(12)<BR>\n" );
document.write( "v = 25 + 7.8<BR>\n" );
document.write( "velocity = 32.8 meters/sec<BR>\n" );
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document.write( "b) Rearrange this formula to make the subject <BR>\n" );
document.write( "(i) u = v - at<BR>\n" );
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document.write( "(ii) t = (v-u)/a<BR>\n" );
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document.write( "2. if a ball is thrown up in the air at a velocity of v, the height it reaches is given by h = V^2/2g \r<BR>\n" );
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document.write( "Where g is the acceleration due to gravity.<BR>\n" );
document.write( "a) Find the height reached by a ball thrown up at a velocity of 15 ms-1.<BR>\n" );
document.write( "h(v) = 15^2/(2g)<BR>\n" );
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document.write( "b) B) Rearrange this formula to make the subject v.<BR>\n" );
document.write( "V = sqrt(2gh)<BR>\n" );
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document.write( "3. A formula for converting temperature is C=(5/9)(F)- 32\r<BR>\n" );
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document.write( "Where C is the temperature in degree Celsius and F is the temperature in degrees Fahrenheit<BR>\n" );
document.write( "a)An old recipe gives the oven temperature 375° F. Covert this temperature to Celsius.<BR>\n" );
document.write( "C(375) = (5/9)(375) - 32 = 176 1/3 <BR>\n" );
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document.write( "b)Rearrange this formula to make the subject F.<BR>\n" );
document.write( "C+32 = (5/9)F<BR>\n" );
document.write( "F = (9/5)(C+32)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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