A block of mass m slides down a frictionless hill, height h, starting from point A (see Figure) from rest. Between points B and C (distance between this two points is L) there is a sand, causing coefficient Н friction with the of friction µ = H,(1+ax), where known are Ho,a constants. How high would it go on a frictionless hill after point C?

A block of mass m slides down a frictionless hill, height h, starting from point A (see Figure) from rest. Between points B and C (distance between this two points is L) there is a sand, causing coefficient Н friction with the of friction µ = H,(1+ax), where known are Ho,a constants. How high would it go on a frictionless hill after point C?