document.write( "Question 111699: The path of a falling object is given by the function s = -16t + vt + st where v represents the initial velocity in ft/sec and s represents the initial height in feet.\r
\n" ); document.write( "\n" ); document.write( "A.) If a rock is thrown upward with an initial velocity of 64 feet per second from the top of a 25-foot building, write the height (s) equation using this information.\r
\n" ); document.write( "\n" ); document.write( "B.) How high is the rock after 1 second?\r
\n" ); document.write( "\n" ); document.write( "C.) After how many seconds will the graph reach maximum height? \r
\n" ); document.write( "\n" ); document.write( "D.) What is the maximum height?
\n" ); document.write( "

Algebra.Com's Answer #81658 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
a. plug in the given values for v and s\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "b. using the equation from a., plug in 1 for t and find s\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "c. the graph of the equation (a) is a downward opening parabola
\n" ); document.write( "___ the maximum height is at the vertex, which lies on the axis of symmetry
\n" ); document.write( "___ the equation for the axis of symmetry is t=-b/2a
\n" ); document.write( "___ (where a is the coefficient of the t^2 term and b is the coefficient of the t term)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "d. plug the result from c. into the equation (a) to find s
\n" ); document.write( "
\n" );