How Does Conservation of Energy Apply to Motion Down a Hill?

[mike_302]

Homework Statement

My attempt at a solution was to say:

E_ki = E_kf + E_g

and my Ek 's all has 1/2 on them... other than that, my solution is essentially the same thing.
I end up with sqrt( v_i² - sg(delta)h ) = v_f



What's up with this?

 

[Delphi51]

The solution in the pdf file looks good and has the same answer as in your post (except for an extra "s" which must be a typo). What exactly is the question you are asking?