How Does Kinetic Friction Affect the Block's Motion on an Incline?

[Imuell1]

Homework Statement

Suppose that the surfaces described are not frictionless and that the coefficient of kinetic friction between the block and the surfaces is 0.30. The block has an initial speed 7.0m/s and slides 2.0 m before reaching the ramp. Find (a) the speed of the the block when it reaches the ramp, and (b) the distance the the block slides along the inclined surface before coming momentarily to rest.(Neglect and energy dissipated along the transition curve.)

Homework Equations

Not sure, this is where I am lost.

The Attempt at a Solution

N/A

 

[Doc Al]

What's the friction force at each point of the surface? Consider the work done by the friction force.