[high dive) above a pool of water. according to the announcer, the divers enter the water at a speed of 56 mi/h (25 m/s). (air resistance may be ignored in this problem.) ve] visitors at an amusement park watch divers step off a platform 70 ft (a) is the announcer correct in this claim? explain. (b) is it possible for a diver to leap directly upward off the board so that, missing the platform on the way down, the diver enters the water at 25 m/s? if so, what initial upward speed is required? is the required initial speed physically attainable? how do you know?
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The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.
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[high dive) above a pool of water. according to the announcer, the divers enter the water at a speed...
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