An ice skater is traveling in a straight, horizontal line on the ice with a velocity of v=5.5m/s in the positive x direction. The coefficient of kinetic friction between the skates and the ice is u_k=.19.
a.) Write an expression for the normal force, F_n, that the ice pushes against both skates together. Assume the skater's mass is m.
b.) Using the expression for normal force, write an expression for the skater's acceleration in the x direction, a.
c.) How long, t_h in seconds, will it take for the skater's velocity to drop by half?
d.) How far, d_h in meters will the skater travel during the time t_h?