document.write( "Question 846542: 1)A particle moves along the top of the parabola y^2=2x from left to right at a constant speed of 5 units per second. Find the velocity of the particle as it moves through the point (2,2).\r
\n" ); document.write( "\n" ); document.write( "2)The quarterback of a football team releases a pass at a height of 7 feet above the playing field, and the football is caught by a receiver 30 yards directly downfield at a height of 4 feet. The pass is released at an angle of 350 with the horizontal.\r
\n" ); document.write( "\n" ); document.write( " Find the speed of the football when it is released.
\n" ); document.write( " Find the maximum height of the football.
\n" ); document.write( " Find the time the receiver has to reach the proper position after the quarterback releases the football.\r
\n" ); document.write( "\n" ); document.write( "Question 3\r
\n" ); document.write( "\n" ); document.write( " Evaluate the double integral over the given region R:\r
\n" ); document.write( "\n" ); document.write( " ∬▒( xy^3)/(x^(2 )+ 1) dA,R:0≤x≤1,0≤y≤2\r
\n" ); document.write( "\n" ); document.write( " ∬▒〖xye^(〖xy〗^2 ) 〗 dA,R:0≤x≤2,0≤y≤1\r
\n" ); document.write( "\n" ); document.write( " ∬▒〖y sin⁡〖(x+y)〗 〗 dA,R: -π≤x≤0,0≤y≤π\r
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\n" ); document.write( "5)Find the volume of the region bounded above the paraboloid z= x^2+ y^2 and below by the triangle enclosed by the lines y=x,x=0 and x+y=2 in the xy plane.\r
\n" ); document.write( "\n" ); document.write( "6)Find the area of the region that lies inside the cardioid r=1+cos⁡θ and outside the circle r=1.\r
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Algebra.Com's Answer #509796 by psbhowmick(878)\"\" \"About 
You can put this solution on YOUR website!
1) Velocity of the particle along parabola is in the direction of its tangent.
\n" ); document.write( "\"dy%2Fdx+=+1%2Fy+=+1%2Fsqrt%282x%29\"\r
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\n" ); document.write( "\n" ); document.write( "At (2,2), \"dy%2Fdx+=+1%2Fsqrt%282%2A2%29=1%2F2\".\r
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\n" ); document.write( "\n" ); document.write( "Let the velocity be represented by: \"V+=+5cos%28theta%29i+%2B+5sin%28theta%29j\"\r
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\n" ); document.write( "\n" ); document.write( "\"tan%28theta%29=dy%2Fdx+=+1%2F2\"
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\n" ); document.write( "\"cos%28theta%29=2%2Fsqrt%285%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"sin%28theta%29+=+sqrt%281+-+cos%5E2%28theta%29%29+=+sqrt%281+-+4%2F5%29+=+1%2Fsqrt%285%29\"\r
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\n" ); document.write( "\n" ); document.write( "Thus, the velocity vector is:
\n" ); document.write( "\"V+=+5%28%282%2Fsqrt%285%29%29i+%2B+%281%2Fsqrt%285%29%29j%29\"
\n" ); document.write( "\"V+=+2%2Asqrt%285%29i+%2B+sqrt%285%29j%29\"\r
\n" ); document.write( "\n" ); document.write( "If you want help with the remaining questions then send me an email. I can solve them on paper, scan and send you. Cheers!!!
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