User:W20arl/Quizzes For Exam 1

Sample Quiz
{Pretend that you live in an absolutely perfect world where bullets ricochet. A bullet is fired at a speed of 98m/s. It is fired at an angle of 38 degrees with respect to the horizontal. At 7 meters it deflects off of of plate one, which is at angle of 28 degrees. It then deflects off of plate 2 which is 8 meters away. The angle of plate 2 is 28 degrees. After that the bullet deflects off of plate 3 which is 8.5 meters away at an angle of 15 degrees. Finally the bullet then deflects off of plate 4 which is 6.75 meters away at an angle of 35 degrees. Somehow after all of this the bullet ends up exactly at the point that it started from. What is the total displacement of the bullet? +a) 0 m -b) 30.25 m -c) 15.5 m -d) 60.5 m -e) 25.25 m
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{A man has a velocity of 9m/s, suddenly he falls off a cliff which is 20 meters tall. What is his final velocity just before he hits the ground ? -a) 22.4978 m/s -b) 24.5468 m/s -c) 23.4986 m/s +d) 21.7578 m/s -e) 24.8249 m/s
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{Tarzan is swinging from a vine to escape a pack of wild baboons. He is running away from them at a speed of 16m/s. While he is running, he finds a vine that is fixed on a pivot point. He uses this vine to propel him up to a cliff to escape the baboons. The cliff is 22m tall. Tarzan weighs about 81kg. What amount of Tension does Tarzan exert on the vine ? -a) 1,081.25 N +b) 2,090.61 N -c) 2,452.87 N -d) 2,236.49 N -e) 3,124.13 N
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