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anonymous
 one year ago
A juggler is performing her act using several balls. She throws the balls up at an initial height of 4 feet, with a speed of 15 feet per second. If the juggler doesn't catch one of the balls, about how long does it take the ball to hit the floor?
Hint: Use H(t) = −16t2 + vt + s.
7.52 seconds
1.15 seconds
0.47 second
0.22 second
anonymous
 one year ago
A juggler is performing her act using several balls. She throws the balls up at an initial height of 4 feet, with a speed of 15 feet per second. If the juggler doesn't catch one of the balls, about how long does it take the ball to hit the floor? Hint: Use H(t) = −16t2 + vt + s. 7.52 seconds 1.15 seconds 0.47 second 0.22 second

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[H(t)=16t^2+15t+4\] set \[16t^2+15t+4=0\] and solve for \(t\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0on account of when it hits the floor, the height is zero

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you can solve by a) using the quadratic formula or b) cheating i prefer cheating http://www.wolframalpha.com/input/?i=16t^2%2B15t%2B4%3D0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0actually it is NOT D

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0beware of answers with no explanation they are often wrong and you have no way of knowing

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah I've learned my lesson from those :P I enjoy option b and wolframalpha as well :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That's what I was just about to say, it took me a while but I noticed it's close to 1.2 and the only answer close to that was 1.15

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Funny how we chose option b and the answer ended up being b xD

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm confused by that...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0my bad i thought this was physics
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