anonymous
  • anonymous
i neeed need in my hmwk! :/
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
with*
anonymous
  • anonymous
What's wrong?
anonymous
  • anonymous
u didn't post question

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anonymous
  • anonymous
|dw:1324427060151:dw|
anonymous
  • anonymous
whats R? whats W?
anonymous
  • anonymous
thats what i dont know.
anonymous
  • anonymous
there is also an equation here..
anonymous
  • anonymous
type in whole problem question
anonymous
  • anonymous
Using \[a = \left(\begin{matrix}Fnet \\ m\end{matrix}\right) = \left(\begin{matrix}W - R \\ m\end{matrix}\right)\] find Bronco's acceleration at each position. You need to know that his mass is 100 kg, so his weight is a constant 1000 N. Air resistance (R) varies with seed and cross - sectional area as shown.
anonymous
  • anonymous
what is Bronco?
anonymous
  • anonymous
a dude
anonymous
  • anonymous
Do you know any air resistance coefficient... Normally it's given as: Fdrag = A*C Where A is area of the person perpendicular to it's direction and C is some sort of air drag constant. Further on, do you know the area (A in previous formula) of mr Bronco?
anonymous
  • anonymous
so what do i need to multiply or divide? or subtract or +
anonymous
  • anonymous
I don't see how "Air resistance (R) varies with seed and cross - sectional area as shown. " Because it isn't shown
anonymous
  • anonymous
it's just a picture of a guy falling trying to skydive. with an arrow pointing down.
anonymous
  • anonymous
i can take a picture and somehow attach it here..
anonymous
  • anonymous
If R=0, as you show in your figure, and straight down (as in figure) ... the only acceleration he gets is gravitational acceleration (g=9.81 m/s^2)
anonymous
  • anonymous
so do u know how to calculate it now?
anonymous
  • anonymous
If there is no air resistance (R=0) and he will just jump straight down, his accelerations are: a(y) = 0 a(x) = 0 a(z) = g = 9.81 m/s (if z points down is positive, note SI units)
anonymous
  • anonymous
what is (y) (x) (z)
anonymous
  • anonymous
axis of coordinates
anonymous
  • anonymous
coordinate system.. x and y are the horizontal components, z is vertical
anonymous
  • anonymous
ok, so the acceleration is 0?
anonymous
  • anonymous
in horizontal direction, yes... it's 9.81 m/s2 in vertical direction (down)
anonymous
  • anonymous
oh okay! thanks! :)
anonymous
  • anonymous
i hatteeeeeee physics.
anonymous
  • anonymous
haha. no worries

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