Conservation Of Mechanical Energy PROBLEM

[CoffinSupply]

Homework Statement

A novice skier, starting from rest, slides down a frictionless 35.00 incline whose vertical height is 185 m.How fast is she going when she reaches the bottom?

Homework Equations

Need the rest of the solution.

The Attempt at a Solution

PICTURE SCAN: http://img528.imageshack.us/img528/8666/homeworkgi6.jpg

Homework Statement

I Need to check if this is correct formula and need to do the rest by someone who knows. Thanks.

 

[tiny-tim]

Welcome to PF!

Hi CoffinSupply! Welcome to PF!

A novice skier, starting from rest, slides down a frictionless 35.00 incline whose vertical height is 185 m.How fast is she going when she reaches the bottom?

Yes, that's right … mg(185) = (1/2)mv_f² …

so v_f = … ?

 

[CoffinSupply]

Hi CoffinSupply! Welcome to PF!


Yes, that's right … mg(185) = (1/2)mv_f² …

so v_f = … ?

Thanks, PF a great place!

vf =49.5 m/s ?

 

[tiny-tim]

Thanks, PF a great place!

vf =49.5 m/s ?

I don't think so …

how did you get that?

 

[CoffinSupply]

crossed out like terms. But how would you do it?

 

[Sakha]

Can't you get the length of the slope using trigs and then then acceleration is g*sin35?

 

[CoffinSupply]

Can I get a complete solution to the problem done , if possible?