Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Friction problems

  1. Sep 7, 2004 #1
    Heres what the book gives:

    A baseball player slides into third base with an initial speed of 7.90m/s. If the coefficient of kinetic friction between the player and the ground is 0.41, how far does the player slide before coming to rest.

    Help? Please? :mad:
     
  2. jcsd
  3. Sep 7, 2004 #2
    Force of friction*t = mvf - mvi

    Force of friction = uk*normal force
     
  4. Sep 7, 2004 #3

    Alkatran

    User Avatar
    Science Advisor
    Homework Helper

    Or, more wordily:

    The coefficient of friction is how much of the normal force, the force the ground applies on you (usually equal and opposite to the force of gravity). A coefficent of .5 means the force of friction is 50% of the normal force.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook