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physics

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The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.20 with the floor. If the train is initially moving at a speed of 47 km/h, in how short a distance can the train be stopped at constant acceleration without causing the crates to slide over the floor?
m

  • physics -

    F=ma
    mu*mg=ma
    solve for acceleration.

    Now, using

    vf^2=vi^2+2ad solve for distance d.

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