Hi I need some help please. If an object is given an initial velocity of v0 feet per second from a height of s0 feet, then it's height s after t seconds is given by the formula S= -16t^(2) + v[0]t + s[0]. If a pine cone falls from the top of a 112 foot tree then how many seconds does it take to reach the earth? Round the answer to one decimal place

Question

Hi I need some help please. If an object is given an initial velocity of v0 feet per second from a height of s0 feet, then it's height s after t seconds is given by the formula S= -16t^(2) + v[0]t + s[0]. If a pine cone falls from the top of a 112 foot tree then how many seconds does it take to reach the earth?  Round the answer to one decimal place

amistre64 · Answer

initial velocity is 0, unless that was a powerful squirrel.... and initial height is 112; just gotta plug and chug it

amistre64 · Answer

112.... 1,112; 4, 28,..4.4.7

4 sqrt(7)
------- = sqrt(7)/8 right?
     32

amistre64 · Answer

0.3 secs i think

amistre64 · Answer

that doesnt look right :)

amistre64 · Answer

16t^2 - 112

16(t^2-7)=0  t = sqrt(7) then.... lets try it :)

-16(7) +112 = 0

amistre64 · Answer

thats better

amistre64 · Answer

2.64...

anonymous · Answer

Thanks

angela210793 · Answer

This is physics....(and math) i don't like it....

amistre64 · Answer

without physics; where would we be ;)  (olivia newton john)

angela210793 · Answer

I'd b still in Albania i know this 4 sure :P:P:P...

amistre64 · Answer

Albania eh... is that were albinos come from?  no offense

angela210793 · Answer

Huh? nooo..Albinos is deficiency of vitamin D(if i'm not wrong)
Albania is in EUROPE!!! (south-east) close to Greece :P:P:P:P:P

angela210793 · Answer

While i was eating dinner i was thinking abt albinos and i understood that i have made a terrible mistake and i am sorry....:(:(:( that is caused because of deficiency of melanin not vit.D :)