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sket5tyredCa
sket5tyredCa sket5tyredCa
  • 08-08-2016
  • Physics
Answered

A 45.0 kg ice skater needs a 25 N horizontal force to get moving on a smooth ice surface. What is the coefficient of friction between the ice and the skates?

a.1.80

c.0.18

b.0.057

d.0.56

Verified Answer :

Anonymous Anonymous
  • 09-08-2016

As we know f=k/N
k = f /N
So
N = m g =  putting values 45 kg 9.81 m/s² = 441.45 N
k = 25 N : 441.45 N =
 so the coeffcient
 of friction between the ice and the skates is 0.057

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