1. according to a newspaper account, a paratrooper survived a training jump from 1154 ft when his parachute failed to open but provided some resistance by flapping in the wind. allegedly he hit the ground at 101.75 mi/h after falling for 7 seconds. to test the accuracy of this account, you should first find the drag coefficient rho, assuming a terminal velocity of 101.75 mi/h and also that the resistance of the paratrooper falling through the air is proportional to his velocity. remember that the accleration due to gravity near the earth's surface is 32 ft/sec^2.
2. next, find the distance d fallen in 6 seconds.
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You throw a ball upward and let it fall to the ground. your friend drops an identical ball straight down to the ground from the same height. is the change in kinetic energy (from just after the ball is released until just before it hits the ground) of your ball greater than, less than, or equal to the change in kinetic energy of your friend's ball?
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1. according to a newspaper account, a paratrooper survived a training jump from 1154 ft when his pa...
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