Asked by sandhu

A block starts with a speed of 18.0 m/s and slides for a distance of 2.2 m down a 40° ramp (muk = 0.43). What is its final speed? (m/s)
Thanks for suggeting the following solution.
The block starts with an initial speed of 18.0 m/s.Does it have any effect?

Final KE = PE loss - (work done against friction)
(1/2)M V^2 = M g L sin40 - M g L cos40*0.43
L = 2.2 m. Cancel out the M's and solve for V^2.
Answered by drwls
Yes, the approach suggested should have had the initial kinetic energy on the right side of the equation.

I recall providing the original answer and apologize for my error. I'm glad you caught it.
Answered by sandhu
Thank you very much.
There are no AI answers yet. The ability to request AI answers is coming soon!