Consider the 65.0 kg ice skater being pushed by two others shown in the figure.

(b)What is her initial acceleration (in m/s²) if she is initially stationary and wearing steel-bladed skates that point in the direction of F_tot? (Assume the value of _s for steel on ice is 0.04.)

(c)What is her acceleration (in m/s²) assuming she is already moving in the direction of F_tot? Remember that friction is always in the opposite direction of motion or attempted motion between surfaces in contact.