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anonymous
 4 years ago
If h(t) represents the height of an object above ground level at time t and h(t) is given by: h(t)=16t^2+14t+1
find the height of the object when at the time when the speed is zero.
h(t)=
(this problem is related to the previous problem that i posted:
http://openstudy.com/study#/updates/4f20823ce4b076dbc348cc35)
anonymous
 4 years ago
If h(t) represents the height of an object above ground level at time t and h(t) is given by: h(t)=16t^2+14t+1 find the height of the object when at the time when the speed is zero. h(t)= (this problem is related to the previous problem that i posted: http://openstudy.com/study#/updates/4f20823ce4b076dbc348cc35)

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0wouldnt you just plug in 14 for t to get 32(14)+14=434 or am i way off

campbell_st
 4 years ago
Best ResponseYou've already chosen the best response.0this is differential calculus.... differentiate the function.... let the derivative = 0. This is when speed is zero.... The solution will give you the time (t) when the speed is 0. Once you have a value for t substitute it into the original equation to get the height when speed = 0. looks like t will be 7/16... which then needs to be substituted...

campbell_st
 4 years ago
Best ResponseYou've already chosen the best response.0actually there are 2 solutions to this the one above and when t = 0 the speed is 0 as well....

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0where do i substitute 7/16?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0the function i was given in the beginning?

campbell_st
 4 years ago
Best ResponseYou've already chosen the best response.0that would be correct since ou substituted a fraction

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i dont think my website accepts mixed numbers so i converted but i got the wrong answer when i did that

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so i tried 191/16 which is wrong and i tried 11.9 which is also wrong

campbell_st
 4 years ago
Best ResponseYou've already chosen the best response.0the fraction is (7)/(16 or seven sixteenths

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yes, i know. what's the final answer?

campbell_st
 4 years ago
Best ResponseYou've already chosen the best response.0there are 2 answers....1 and a value between 4 and 4.1

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok the correct answer is 4 (according to my hw site) how did you get 4?

campbell_st
 4 years ago
Best ResponseYou've already chosen the best response.0by correctly substituting.... and knowing some calculus... sorry but this has become painful good luck with your solution

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0you couldve just showed ur work in the beginning so i wouldnt have asked so many questions but whatever _

campbell_st
 4 years ago
Best ResponseYou've already chosen the best response.0this is a basic calculus concept.... please try and learn it, good luck
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