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hasek888
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Law of conservation of energy homework help!
A skier goes down a slope and goes over a ramp. From a resting position which has a height of 16m, she leaves a ramp of 9m at an angle of 45 degrees and passes over a haystack forming a 30degree angle vertically. Supposing there is no friction and that the skier's dimension are negotiable, find the height of the haystack.
I attached a drawing of the problem also.
ET1 = ET2
mgh1 + m(v1^2)/2 = mgh2 + m(v2^2)/2
I think that's what I am supposed to do...
Well, so far I've done the following:
h1 = 16m
h2 = 9m
v1 = 0m/s
using the equation above,
9.8 x 16 + 0 = 9.8 x 9 - V2^2
V2 = 8.3 m/s
It's all i have now, and I am not even sure whether what I did is right or not!
Any help is greatly appreciated!
Homework Statement
A skier goes down a slope and goes over a ramp. From a resting position which has a height of 16m, she leaves a ramp of 9m at an angle of 45 degrees and passes over a haystack forming a 30degree angle vertically. Supposing there is no friction and that the skier's dimension are negotiable, find the height of the haystack.
I attached a drawing of the problem also.
Homework Equations
ET1 = ET2
mgh1 + m(v1^2)/2 = mgh2 + m(v2^2)/2
I think that's what I am supposed to do...
The Attempt at a Solution
Well, so far I've done the following:
h1 = 16m
h2 = 9m
v1 = 0m/s
using the equation above,
9.8 x 16 + 0 = 9.8 x 9 - V2^2
V2 = 8.3 m/s
It's all i have now, and I am not even sure whether what I did is right or not!
Any help is greatly appreciated!