An ice skater is traveling in a straight, horizontal line on the ice with a velocity of v = 7.5 m/s in the positive x-direction. The coefficient of kinetic friction between the skates and the ice is k = 0.23. Randomized Variables v = 7.5 m/s M=0.23 FN= 25% Part (a) Write an expression for the normal force, Fy, that the ice pushes against both skates together. Assume the skater's mass is m. cos(a) cos(Q) cos(0) sin(Q) ( ) 7 sin(0) a Mk 4 A a d . g 1 852 9 HOME 6 3 cancel i j k + - 0 END notext P S t VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback. 25% Part (b) Using the expression for normal force, write an expression for the skater's acceleration in the x-direction, a. 25% Part (c) How long, th, in seconds, will it take for the skater's velocity to drop by half? 25% Part (d) How far, d,, in meters, will the skater travel during the time ?