Physics

posted by .

A skier with a mass of 56 kg starts from rest and skis down an icy (frictionless) slope that has a length of 70 m at an angle of 32° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes horizontal, the snow becomes less icy, and the skier begins to slow down, coming to rest in a distance of 145 m along the horizontal path.
(a) What is the speed of the skier at the bottom of the slope?
(b) What is the coefficient of kinetic friction between the skier and the horizontal surface?
μk =



I am really lost have no clue please help

  • Physics -

    Force down the slope: mg*SinTheta
    acceleration= force/mass so figure that.

    Vf^2=Vi^2+2ad solve for Vf

    Use that same equation, with Vf=0 now, solve for a. Then a= mu*g, solve for mu.

  • Physics -

    What does Vi^2 stand for and for you u what value do i use...n for d is it 70 or 145


    Thank you

  • Physics -

    I kept trying but still i cant come up with the right answer :/ this is what i did for the speed

    56(9.8)sin(32) =290.82
    a=290.82/56
    5.2 m/s^2

    Vf^2=0^2+2(5.2)(145)=38.8
    can you please help

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A 35-kg skier skis directly down a frictionless slope angled at 11° to the horizontal. Assume the skier moves in the negative direction of an x axis along the slope. A wind force with component Fx acts on the skier. What is Fx (in …
  2. physics

    A skier skis down a 25 m high frictionless ski slope. How fast will she be moving at the bottom of the slope if: A) She starts from rest at the top B) She starts out with a velocity of 10 m/s
  3. physics

    A skier skis down a 25 m high frictionless ski slope. How fast will she be moving at the bottom of the slope if: A) She starts from rest at the top B) She starts out with a velocity of 10 m/s
  4. physics

    A skier with a mass of 70 kg starts from rest and skis down an icy (frictionless) slope that has a length of 52 m at an angle of 32° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes horizontal, …
  5. Physics

    A skier of mass 64 kg starts from rest at the top of an 18° slope, points her skis straight down the slope and lets gravity pull her down the slope. The slope is 65 m long. Her speed at the bottom is 15 m/s. (a) Assuming zero air …
  6. Physics

    A skier with a mass of 66.6 kg starts from rest and skis down an icy (frictionless) slope that has a length of 58.4 m at an angle of 29.8° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes …
  7. Physics

    A ski slope drops at an angle of 24 degrees with respect to the horizontal and is 500 m long. A 60 kg skier skis down from the top to the bottom of the slope. A.) Determine the change in gravitational potential energy of the skier+earth …
  8. physics

    A ski slope drops at an angle of 24 degrees with respect to the horizontal and is 500 m long. A 60 kg skier skis down from the top to the bottom of the slope. A.) Determine the change in gravitational potential energy of the skier+earth …
  9. physics

    A skier starts from rest at the top of a frictionless incline of height 20.0 m, as shown in the figure. At the bottom of the incline, the skier encounters a horizontal surface where the coefficient of kinetic friction between skis …
  10. science

    A skier with a mass of 60.0 kg starts from rest and skis down an icy (frictionless) slope that has a length of 53.0 m at an angle of 25.4° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes …

More Similar Questions