document.write( "Question 346005: Wondering if someone could please help me on a Physic problem???\r
\n" ); document.write( "\n" ); document.write( "If so here is the question:\r
\n" ); document.write( "\n" ); document.write( "A student throws a ball vertically downward at a velocity of 8.0m/s from the top of a 25m building.\r
\n" ); document.write( "\n" ); document.write( "a)How long does it take the ball to reach the ground?\r
\n" ); document.write( "\n" ); document.write( "b)What is the velocity of the ball as it hits the ground?\r
\n" ); document.write( "\n" ); document.write( "Please & Thank you if someone could help me???
\n" ); document.write( "

Algebra.Com's Answer #247404 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
A student throws a ball vertically downward at a velocity of 8.0m/s from the top of a 25m building.\r
\n" ); document.write( "\n" ); document.write( "a)How long does it take the ball to reach the ground?\r
\n" ); document.write( "\n" ); document.write( "b)What is the velocity of the ball as it hits the ground?\r
\n" ); document.write( "\n" ); document.write( "s=V0t +1/2 gt^2 (g=9.8 m/s)
\n" ); document.write( "25=8t+4.9t^2
\n" ); document.write( "4.9t^2+8t-25=0
\n" ); document.write( "use quadratic formula
\n" ); document.write( "you will get t = 1.585 s or 1.6 seconds
\n" ); document.write( "...
\n" ); document.write( "v=u+at
\n" ); document.write( "v=8+9.8*1.6
\n" ); document.write( "23.68m/sec
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