A sight seen on many bunny hills across ontatrio is young skiers pushing on ski poles and gliding down a slope untill they come to a rest . Obeserving from a distance , you note a young person (approximatly 25kg) pushing off with the ski poles to give herself an intial velocity of 3.5m/s. If the inclination of the hills is 5 degress and hte coefficient of kinetic friction for the skis on dry snow is 0.20 calculate.
A) the time taken for the skier to come to a stop
solving for t
solving for a
The Attempt at a Solution
vi-3.5m/s m=25kg mu=0.20 angle=5degress
I'm assuming that the skier without velocity would be stationary on the inclination.
This is my first problem, is she accelerating down the ramp or moving at a constant velocity
49 newtons on the yaxis
This is where I'm confused
I have another equation that goes like this
Fa=Fgsine5 + muFn
I'm assuming this equation accounts for acceleration, subtracting the Ff.
This is wrong
oh and can someoen give me a more detailed explaantion what Fnormal is. I"m assuming it is the x component Fg subtracted from Fg.