Ask Question
4 October, 14:29

A skater with an initial speed of 7.30 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. Air resistance is negligible. (a) The coefficient of kinetic friction between the ice and the skate blades is 0.105. Find the deceleration caused by kinetic friction. (b) How far will the skater travel before coming to rest?

+2
Answers (1)
  1. 4 October, 18:27
    0
    a. a = 1.029 ms⁻²

    b. S=25.89 m

    Explanation:

    given

    initial speed is u = 7.30 m/sec

    final speed is v = 0 m/sec

    mu_k = 0.105

    kinetic frictional force is Fk = mu_k*m*g

    mu_k*m*g = m*a

    m cancels

    mu_k*g = a

    deccelaration a = mu_k*g = 0.105*9.8 = 1.029 ms⁻²

    b) using v²-u² = 2aS

    0²-7.3² = - 2*1.029*S

    53.29=2.058*S

    S = 53.29/2.058

    S=25.89 m
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A skater with an initial speed of 7.30 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. Air ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers