F = μN = μmg = m*a so μ*g = a so **a = 0.34*9.8 **which is the abs(a) because acceleration is really negative since it's in opposite direction

V_{f}2 = 0 = V^{2} + 2ad... 25/(2a) = d... the negative cancelled out because acceleration was really negative

so d = 25/2(.34*9.8) = **3.7515 m**