The speed limit on a particular city street is 45 miles per hour (which is 20 m/s). A driver approaching a stop light slams on their brakes, locking the wheels of their car in place so that they no longer rotate. If the coefficient of friction between the car's tires and the street is 0.9, what is the minimum distance the driver would need to start braking in order to stop before the intersection?
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Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and
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Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?
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22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?
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The speed limit on a particular city street is 45 miles per hour (which is 20 m/s). A driver approac...
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