Question 676747
<pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi
h(t)= -16t^2 +5t+5 
h(t)=  -16(x- 5/32)^2 + 25/64 + 5
h(t)=  -16(x- 5/32)^2 + 5.3906  ||Parabola opening Downward  V(5/32, 5.3906)
How long did it take for the ball to reach its maximum height?  5/32 sec
How many seconds passed before the ball hit the ground? h(t) = 0
 -16t^2 +5t+5 = 0
{{{t = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{t = (-5 +- sqrt( 345))/(-32) }}}
          t = .7381 sec passed before the ball hit the ground