Quiz 1 0900 - Physics 1A-b 9AM CLASS Quiz # 1 Oct. 10, 2008...

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Physics 1A-b 9AM CLASS Quiz # 1 Oct. 10, 2008 Prof. Jose Onuchic MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A high fountain of water is in the center of a circular pool of water. You walk the circumference of the pool and measure it to be 100 meters. You then stand at the edge of the pool and use a protractor to gauge the angle of elevation of the top of the fountain. It is 55 o . How high is the fountain? A) 142 m B) 23 m C) 71 m D) 29 m E) 17 m 2) A rock is thrown straight up with an initial velocity of 49 m/s.What maximum height will the rock reach before starting to fall downward? (Take acceleration due to gravity as 9.80 m/s 2 .) A) 39.2 m B) 78.6 m C) 49 m D) 122.5 m E) 157.2 m 3) A water rocket, launched from the ground, rises vertically with acceleration of 30 m/s 2 for 2 s when it runs out of "fuel". Disregarding air resistance, how high will the rocket rise before it starts to fall? A) 61 m
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Quiz 1 0900 - Physics 1A-b 9AM CLASS Quiz # 1 Oct. 10, 2008...

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