- #1
Parzival
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Help! I am a starter physicist and I need hlep on this question stated thus:
A sled is being pulled across a horizontal patch of snow.
Friction is negligible. The pulling force points in the same direction
as the sled's displacement, which is along the +x axis. As a result, the kinetic energy of the sled increases by 38%. By what percentage would the sled's kinetic energy have increased if this force had pointed 62° above the +x axis?
W = final KE - initial KE
W = (F cos theta)*displacement
I tried using the work-energy theorem, but i couldn't solve for any of the variables. Then I turned to the second work formula, but still no dice.
Homework Statement
A sled is being pulled across a horizontal patch of snow.
Friction is negligible. The pulling force points in the same direction
as the sled's displacement, which is along the +x axis. As a result, the kinetic energy of the sled increases by 38%. By what percentage would the sled's kinetic energy have increased if this force had pointed 62° above the +x axis?
Homework Equations
W = final KE - initial KE
W = (F cos theta)*displacement
The Attempt at a Solution
I tried using the work-energy theorem, but i couldn't solve for any of the variables. Then I turned to the second work formula, but still no dice.