anonymous
  • anonymous
I need help with this
AP Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
1 Attachment
nikato
  • nikato
do you have the answer?
nikato
  • nikato
|dw:1433306744103:dw|

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nikato
  • nikato
|dw:1433306925729:dw|
nikato
  • nikato
using this formula \[v ^{2}=v _{0}^{2}+2a(\Delta x)\]
nikato
  • nikato
|dw:1433307141300:dw|
nikato
  • nikato
|dw:1433307348337:dw| i hope this is right
IrishBoy123
  • IrishBoy123
simplest approach, using best equation of motion for the job, and resolving gravity down the slope as g sin(30.9) as suggested by @nikato: \(x = u t + 1/2 a t^2, u = 0, t = \sqrt{2x/a}, a = g sin (30.9), x = 208, t = 9.09s\) [error in previous attempt is in using constant velocity down the slope, which gives half the correct answer: as the snow starts at zero and accelerates to final velocity.]
anonymous
  • anonymous
yeah I talked with my professor and I found that I actually set the problem up incorrectly, but I understand it now. I got the 9.0917 s.

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