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De Anza College Newtons Laws Physic Question
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A skateboarder of mass m is skating down a slope with angle . To control her speed, she drags
her foot on the ground. With what force P would she need to push her foot down against the
street so that she moves at a constant speed? The coefficient of kinetic friction between her
shoe and the street is Assume that the skateboard’s wheels are frictionless. You can ignore
air resistance.
