Question

i need help solving this question. the function S(t) = -16t^2 +64t+192 gives the height S IN FEET o a model rocket launched with velocity of 64ft/sec from a hill that is 192ft high

a. determine how long it will take the rocket to reach the ground?
b.find the interval on which the hieght of the rocket is greater than 240ft?

Answer 1

factor it and set the factors = to zero and solve. the left one is time 0 the right one is when the object lands.

Answer 2

would it be 6 sec

Answer 3

how would u answer b

Answer 4

set s(t) >240, and solve for t

Answer 5

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Answer 6

whats st

Answer 7

S(t) = -16t^2 +64t+192 > 240

Answer 8

i still am not getting i

Answer 9

set the equation = 240, you will find the 2 points that the rocket goes over 240ft and comes back down below it.