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14 November, 13:40

At a wedding reception, you notice a small boy who looks like his mass is about 25 kg running part way across the dance floor, then sliding on his knees until he stops. If the kinetic coefficient of friction between the boy's pants and the floor is. 15, what is the frictional force acting on him as he slides?

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  1. 14 November, 16:48
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    Mass of the object m = 25 kg

    Coefficient of friction Uk = 0.15

    Frictional force Ff = Uk x F = > Ff = Uk x m x g

    Ff = 0.15 x 25 x 9.8

    Frictional Force Ff = 36.75 N
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