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 one year ago
Can anyone help me out with this problem: A ball is thrown vertically upward with initial velocity v. Find the maximum height H of the ball as a function of v. Then find the initial velocity v required to achieve a height of H.
 one year ago
Can anyone help me out with this problem: A ball is thrown vertically upward with initial velocity v. Find the maximum height H of the ball as a function of v. Then find the initial velocity v required to achieve a height of H.

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Shadowys
 one year ago
Best ResponseYou've already chosen the best response.0we'll just use the eq, \(v^2 = u^2 +2aS\), since u=0, a=g,(since it is opposite direction of v), rearranging gives \(S=\frac{v^2}{2g}\)

skapat
 one year ago
Best ResponseYou've already chosen the best response.0ive arrived at this answer too...however when i submitted it...it said that g was not defined in this context

skapat
 one year ago
Best ResponseYou've already chosen the best response.0is there any way to answer this in terms of H and v only?

Shadowys
 one year ago
Best ResponseYou've already chosen the best response.0or, you can just sub g=10 into it

skapat
 one year ago
Best ResponseYou've already chosen the best response.0thats what i would think so too. but it still says that answer is incorrect

Shadowys
 one year ago
Best ResponseYou've already chosen the best response.0oh oh. sorry. my mistake. it's initial velocity, not end velocity. since v=0, \(u=\sqrt{2gH}=\sqrt{19.8H}\)

skapat
 one year ago
Best ResponseYou've already chosen the best response.0tried that one too unfortunately....im not sure what they looking for

Shadowys
 one year ago
Best ResponseYou've already chosen the best response.0dang==then i have no idea what they want

skapat
 one year ago
Best ResponseYou've already chosen the best response.0thanks for trying to help though. ...its very much appreciated :)
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