Asked by shelby
h = -16t2 + 32t + 84.
find the maximum height
how many seconds will it take to reach the ground
find the maximum height
how many seconds will it take to reach the ground
Answers
Answered by
bobpursley
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
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