(20%) Problem 1: An ice skater is traveling in a straight, horizontal line on the ice...

 

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(20%) Problem 1: 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 = 0.18. Randomized Variables v = 7.5 m/s Hz= 0.18 A 25% Part (a) Write an expression for the normal force, F. that the ice pushes against both skates together. Assume the skater's mass is m. A 25% Part (b) Using the expression for normal force, write an expression for the skater's acceleration in the x-direction, a. A 25% Part (c) How long, th in seconds, will it take for the skater's velocity to drop by half? A 25% Part (d) How far, dh in meters, will the skater travel during the time th? dn = Grade Summary Deductions Potential 0% 100% (20%) Problem 1: 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 = 0.18. Randomized Variables v = 7.5 m/s Hz= 0.18 A 25% Part (a) Write an expression for the normal force, F. that the ice pushes against both skates together. Assume the skater's mass is m. A 25% Part (b) Using the expression for normal force, write an expression for the skater's acceleration in the x-direction, a. A 25% Part (c) How long, th in seconds, will it take for the skater's velocity to drop by half? A 25% Part (d) How far, dh in meters, will the skater travel during the time th? dn = Grade Summary Deductions Potential 0% 100%