1) The height above ground of an object thrown
upward from an initial height of s ft with an initial
velocity of v ft/sec is modeled by
h(t) = -16t² + vt + s. Javier throws a baseball
upward at 80 ft/sec from a platform 64 ft above the
ground. To the nearest tenth of a second, when will
the baseball hit the ground?
A. 0.7
B. 2.5
C. 5.0
D. 5.7