Quick question on a simplification of position formula

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The discussion centers on simplifying a position formula related to physics problems involving velocity and gravity. The user is confused about why the number 127 appears under the square root instead of 127 squared. Another participant confirms that the equation simplifies correctly to v = 127√(g/(2*80.8)), clarifying the user's misunderstanding. The conversation includes a welcoming note and a suggestion to use formatting tools for clarity. Overall, the focus is on resolving the simplification of the position formula in the context of the problem presented.
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Homework Statement



I'm having issues simplifying the following position formula.

Homework Equations

http://imgur.com/y1tgG.jpg

The Attempt at a Solution



Its probably something really stupid I'm not realizing but i don't understand how under the square root 127 got to be 127 and not 127^2.

Since in the orig problem when you solve for V^2 you'd end up with

V^2= (127^2)(g)/ ((2)(80.8))
[
 
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Welcome to PF!

Hi skurred! Welcome to PF! :smile:

(try using the X2 tag just above the Reply box :wink:)

Yes, you're right … (g/2)(127/v)2 = 80.8, so v = 127√(g/(2*80.8)) :smile:

(is this from a book? :redface:)
 

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