find the zeroes first:
0=16t^2-32t-84
0=t^2-2t- 21/4
0=(t-3.5)(t+1.5) so zeroes are at 3.5, -1.5, so max occurs at mid point, t=1.0, max height= -16+32+84=100
h = -16t2 + 32t + 84.
find the maximum height
how many seconds will it take to reach the ground
1 answer
1 answer