Solving Net Force with (g), sin(θ) & μcos(θ)

[chezholmes]

Homework Statement

An Olympic skier moving at 33 m/s down a 22◦ slope encounters a region of wet snow of coefficient of kinetic friction μ = 0.78.
The acceleration of gravity is 9.8 m/s2 .
How far down the slope does she travel before coming to a halt?
Answer in units of m.

Relevant Equations

Newton's second law equation
kinematic equations
Ff = μ*Fn

Tried net force = (g)sin(θ)- μ(g)cos(θ)

 

[tnich]

And your question is?

 

[neilparker62]

Homework Statement: An Olympic skier moving at 33 m/s down a 22◦ slope encounters a region of wet snow of coefficient of kinetic friction μ = 0.78.
The acceleration of gravity is 9.8 m/s2 .
How far down the slope does she travel before coming to a halt?
Answer in units of m.
Homework Equations: Newton's second law equation
kinematic equations
Ff = μ*Fn

Tried net force = (g)sin(θ)- μ(g)cos(θ)

Net force as you have it is actually 'net acceleration'. Well that's fine - select correct equation of motion to solve for displacement down the slope.