How to Calculate a Skier's Speed at the Bottom of a Slope?

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To calculate a skier's speed at the bottom of a 20° incline, the skier's acceleration can be determined using the gravitational component along the slope. The coefficient of kinetic friction, which is 0.2, must also be factored into the calculations. The mass of the skier is not necessary for this calculation, as it cancels out in the equations. The key is to apply the correct physics equations, focusing on forces acting on the skier and the distance traveled. Ultimately, understanding the relationship between gravity, friction, and acceleration is essential for finding the skier's final speed.
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Homework Statement



a skier starts from rest at the top of a 20° incline and skis in a straight line to the bottom of the slope, a distance D of 400 meters. if the coefficient of kinetic friction between the kis and the snow os .2, calculate the skier´s speed at the bottom of the run

Homework Equations


ive tried all the equations that include all the variables but I am always missiing one variable like time, mass or acceleration


The Attempt at a Solution

 
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You actually have the acceleration.It is the component of g along the slope.You don't need the mass and the time(what time?).
 


when u say g you are talking about gravity right?
 

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