A baseball player slides into third base with an initial speed of 3.8m/s. If the coefficient of kinetic friction between the player and the ground is 0.40, how far does the player slide before coming to rest?

Answer 1

I used this equation:

Change in x = (velocity^2/2*mu*gravity)

Answer 2

Fx=Max Fk=-max
vx^2=Vox^2+2ax(X)
ax=(Vox^2-Vx^2)/X
ax=((4.0)^2-0)/2X
Fy=N+(-W)=m(ay)=0 or N=W=mg
Fk=Nk(N)
-m(ax)=O.46(mg)
2/x=0.46(g)