I am stumped... very hard question:
"A 70.0kg woman does a bungee jump. The length of the bungee cord is 5.00m and it has a spring constant of 122.08 N/m. Assume the gravitational field strength is 9.81 N/kg.
a)What is the maximun distance the bungee cord will stretch and how far will the...
thank you for the replys, well it came down to deadline so I assume there was no friction what so ever and i ended up with something like this for a equation:
W= F*d
W= (9.81m/s^2*70)*d
Substituted joules from breakfast as work:
450kj=(9.81m/s^2*70)*d
(450kJ)/(9.81m/s^2*70)=d
d=655m...
Energy Question -- Burning off Breakfast
Im not to good at physics to begin with, and I've been having a lot of trouble with this question:
"How many steps does it take to wear off your breakfast?"
First of all this question doesn't give you any starting points with variables and such and I...
"Äy = v0t - 0.5gt^2
-69 = 5t - 0.5gt^2
-192 = 10t - 10t^2
t^2 - t - 19.2 = 0
t = 4.9 when the object reaches the top of the window." - you wrote
so i really don't get your equation here... how does 0.5gt^2 give you 10t^2... even if you used 10 for gravity you would still only...
Hello... well I am just trying to prepare myself for my midterm which is on kinematics (1 and 2 dimensions) and dynamics. I've been trying a lot of problems, some i get some i don't... well anyways I was hoping that you guys could give me some key points and concepts that would be useful for my...
trying to study for a midterm with kinematics 1d 2d and dynamics
Heres problem:
A stone is thrown vertically downward from the top of a 96m building at a velocity of 5.0m/s. This stone is observed passing by a window that has a height of 2.0m. Assuming that the bottom of the window is 25m...
Dynamics -- Still stuck.. need ideas
Fm=Fa+Fg
46^2=Fa+9.81^2
Fa=[squ]2019.7639
fa= 44.9m/s^2
F=Ma
=46g*44.9m/s^2
=2065N
Using Free body diagrams I believe I figured out that it would take...
43.8N downhill and 64.3N uphill
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Im not sure if the...
IM in Phys.20 Got this question for an assignment. Tried it and got stuck. I really need help
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When golfing, uphill and downhill putts present different levels of difficulty. Suppose a green has a 5.0 degree slope and the force of friction will be 0.10N...