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Quiz 2 Questions - University Physics I | PHYS 2050, Quizzes of Physics
Material Type: Quiz; Professor: Wyman; Class: University Physics I; Subject: Physics; University: Western Michigan University; Term: Fall 2011;
Typology: Quizzes
2010/2011
1 / 1
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Download Quiz 2 Questions - University Physics I | PHYS 2050 and more Quizzes Physics in PDF only on Docsity! PHYS 2050 Fall 2011 Quiz #2 Instructions: answer all problems and show all relevant work needed to find solution. Circle your final answer. Some (possibly) useful equations and constants v = v0 + at ∆x = v0t + ½at2 v2 = v02 + 2a∆x g = 9.8 m/s2 Problems: 1. (10 pts) A rifle is aimed horizontally toward the center of a target 0.20 km away, but the bullet strikes 40 cm below the center. Calculate the velocity of the bullet just as it emerges from the rifle. How long is the bullet in flight? 2. (10 pts) A football is thrown upward at a 30.0° angle to the horizontal. To throw a 40.0-m pass, what must be the initial speed of the ball? How long is the ball in the air?