Maria asked in Science & MathematicsPhysics · 8 months ago

A 1075 kg car traveling 35 m/s puts on the brakes and skids to a stop. The coefficient of sliding friction between rubber tires and wet ?

pavement is 0.33. Show all forces acting on the car while it is skidding. 

3 Answers

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  • MyRank
    Lv 6
    8 months ago

    Given,

    Mass (m) = 1075kg

    Speed (v) = 35m/sec

    Co-efficient of friction (μ) = 0.33

    Frictional force (Ff) = ?

    We know that:-

    Frictional force (Ff) μN = μmg

    = 0.33 x 1075 x 9.81

    = 3480N

  • 8 months ago

    So, obviously, there is gravity downwards. Next, because the car isn't falling through the pavement, the pavement is exerting a normal force back up, which also is why there is friction. Lastly, there is the force of friction opposite to the direction of travel. So three forces in total.

    Hope that helped

  • Jim
    Lv 7
    8 months ago

    start with a diagram

    F=ma so look for acceleration

    F=mg where g is gravity

    Ff=μ*NwhereF f is the frictional force (in Newtons),μ(mu) is the static or kinetic (μk) frictional coefficientN is the normal force (in Newtons).

    Attachment image
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