Question

a 10kg block is allowed to slide down a ramp with Mk=0.15. what is the acceleration of the block?

Answer 1

I do not know what Mk is
Need slope of ramp and friction coefficient.

Answer 2

By the way, the mass should not matter.

Answer 3

The numerical value of acceleration, a, will depend upon the angle of the block. Call that angle "A".
Acclerating force = M g sin A
Friction force = M g cos * Mk

Mg(sin A - Mk cos A) = M a

a = g(sinA - Mk*cosA)