SOLUTION: Please help me solve this equation tutors! An object is launched directly upward at 64m/sec from a platform 80m high. Its path is modeled by the equation {{{ h=-16t^2 + 64t + 8

Question 920925: Please help me solve this equation tutors!
An object is launched directly upward at 64m/sec from a platform 80m high. Its path is modeled by the equation where h is the height abobe the ground and t is the time in seconds.

a) When will the object hit the ground?
b) What will be the object's maximum height?
c) When will it attain this height
Thank you!
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

h = -16(t -2)^2 + 64 + 80
h = -16(t -2)^2 + 144
a) When will the object hit the ground?
0 = -16(t -2)^2 + 144
(t -2)^2 = 9
t -2 = 3
t = 5 sec
....
h = -16(t -2)^2 + 144
b) What will be the object's maximum height? 144m
c) When will it attain this height: 2sec
RELATED QUESTIONS
Please answer this question. An object is launched upward at 45ft/Sec from a platform... (answered by stanbon,Greenfinch,drk)

Please help me solve this. An arrow is shot vertically upward from a platform 35 ft. high (answered by stanbon)

an object in launched upward at 110 feet per second from a platform 75 feet high . a) (answered by Boreal,rothauserc)

An object is launched upward at 45 ft/sec from a platform that is 40 feet high. What is... (answered by richwmiller)

Find the perfect square trinomial whose first two terms are: a^2 - 8a Solve by... (answered by Earlsdon)

A projectile is launched upward at an initial velocity of 64 ft/sec from a platform. It... (answered by ankor@dixie-net.com)

I am trying to help my sister with her homework and I am stumped. Please help. here is... (answered by josmiceli)

Please help me with this problem: An object is launched at 19.6 meters per second from a... (answered by Alan3354,addingup)

Please help me solve this problem: If an object is projected upward with an initial... (answered by richwmiller)