mass sliding?

Question

A mass M is at the top of a slide, it is sliding down the inclined part of a slide at a speed of 1.91 m/s. The mass stops a distance S2 = 2.5 m along the level part of the slide. The distance S1 = 1.22 m and the angle  = 35.70°. Calculate the coefficient of kinetic friction for the mass on the surface.

Answer 1

Buster,
I'll be glad to help but you can't learn this unless you do it yourself.
That being said, let me point you in the right direction:
You have an initial speed.
You have a final speed.
You have a distance in which the mass slowed to a stop.
Remember your kinematic formulas for motion in a straight line? You can use them to find the acceleration (or in this case deceleration)
The deceleration is due to friction. Friction in this case is dependent on gravity, mass and the coefficient of friction (don't forget about the angle of inclination).
You have everything you need to solve for the coefficient of friction, but it will require a couple of steps and use at least two different formulas.
Good luck.