SOLUTION: A toy rocket is propelled upward at a speed of 96ft/sec by a machine that is 11 feet off the ground. The height h of the object after t seconds can be found using the function: h (

Algebra ->  Equations -> SOLUTION: A toy rocket is propelled upward at a speed of 96ft/sec by a machine that is 11 feet off the ground. The height h of the object after t seconds can be found using the function: h (      Log On


   



Question 1202971: A toy rocket is propelled upward at a speed of 96ft/sec by a machine that is 11 feet off the ground. The height h of the object after t seconds can be found using the function: h (t) = -16t^2 +96t + 11
When will the toy rocket hit the ground and what is the practical domain for this function?

Answer by 4419875(21) About Me  (Show Source):
You can put this solution on YOUR website!
Since we know that it is a function of h(t), and expected that h(t) = 0 which means it has hit the ground; it can be said that we can obtain time (t), in such way 16t%5E2-96t-11=0
By quadratic formula, t+=+-0.11s and t+=+6.11s
Practically there's no such time existing at negatives so 6.11s should be the time to get into.
Now the domain can be dom h(t):(0, 6.11].