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a 2.5kg poodle slides across a frozen lake at a speed of 6.3m/s. the coefficient of kinetic friction between poodle and ice is 0.088.
show that the poodle will slide 7.3 seconds before coming to rest.

  • physics -

    mg*mu*distance=1/2 m vi^2
    but distance= avgvelocity*time=Vi/2*time
    mg*mu*vi*time/2= 1/2 m vi^2

    time= vi/(g*mu)

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