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anonymous
 5 years ago
A boy standing on a 64 foot cliff drops a coin off the cliff. If the equation of the height h of the coin t seconds after it drops is h = 16t2 + 64, about how many seconds will the coin take to reach the bottom of the cliff?
A. 1 second
B. 1.5 seconds
C. 2 seconds
D. 2.5 seconds
anonymous
 5 years ago
A boy standing on a 64 foot cliff drops a coin off the cliff. If the equation of the height h of the coin t seconds after it drops is h = 16t2 + 64, about how many seconds will the coin take to reach the bottom of the cliff? A. 1 second B. 1.5 seconds C. 2 seconds D. 2.5 seconds

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay what is the height of the bottom of the cliff?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0lets go over this together.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0haha :O ok ya lets go over it.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you can almost see that 2 squared is 4, and 4 * 16 = 64

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the equation states that h is the height of the coin t seconds after it is dropped. You are asked to find when it reaches the bottom. So what is the height of the bottom?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the cliff is 64 ft. right? lol cuz u said whats the height of the bottom of the cliff i think

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes, I know what I asked. So, answer me, what do you think the height of the bottom of the cliff is?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if I am 6 feet high, how high is the bottom of my feet from the ground?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok uhmm blonde moment rite now how bout 16?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0haha wow blonde moment

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0throw h=0 in and solve for t!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yes!. so the moment the coin touches the bottom of the cliff, it is 0 feet high from the ground.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0craig is trying to rush through it lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so equate h to 0 and solve the equation, that is, 0 = 16t^2+64

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ah! ok one moment keep typing watever ur typing.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0or, 16 t^2 = 64. or t^2 = 4 or t = +2 or 2. Since time cannot be negative, t = +2. So it takes 2 seconds to reach the bottom.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that makes sense! (: thx!! xD

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay great! you are welcome.
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