the function y=-16^2+64t+4 describes the height (in feet) of a discus t seconds after its released.

Question

a)when does the dicus reach its maximum height.

b)find the maximum height of the discus

Answer 1

(a)

It reaches maximum height at the vertex of the height-vs.-time parabola, which is at

t = -64/[2(-16)] sec = ? sec

(b)

Evaluate y(t) at the time found in part (a).