CU 2003 fa final exam

# CU 2003 fa final exam - Physics 2010 Final Exam December...

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Physics 2010 Final Exam December 15, 2003 The exam starts at 10:30 AM and ends at 12:00 PM. Code your answers onto the scantron sheet using a number 2 pencil. Hand in only the scantron. Thanks for you attention and hard work this semester. I enjoyed teaching this class. Best of luck. Paul Beale Useful Constants: Acceleration of gravity near the surface of the earth: g=9.80 m/s 2 Universal Gravitation Constant: G=6.67x10 -11 Nm 2 /kg 2 Speed of light: 3.00x10 8 m/s Speed of Sound in Air at 20 ° C = 343 m/s Absolute Zero = 0 Kelvin = -273 ° C Density of water = 1000 kg/m 3 Useful Conversions: 1 cm = 0.01 meters 1 inch = 2.54 cm 1 mile = 1609 meters 1 km = 1000 meters 1 minute = 60 seconds 1 hour = 3600 seconds

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1. A group of students use a giant slingshot to shoot a water balloon from the top of Williams Village. The top of the building is 50 meters above the ground. The initial velocity is 60 m/s at an angle of 30 degrees above the horizontal. Approximately how high above the ground will the water balloon it be at the maximum height? a) 30 m b) 50 m c) 60 m d) 100 m e) 200 m 2. You are seated on an airplane a few minutes after takeoff. Your mass is 50 kg so when you stood on a scale before boarding the plane the scale read 490 newtons. The acceleration of gravity is 9.80 m/s 2 throughout problems 3 and 4. The airplane is traveling along with a constant horizontal component of velocity of 100 m/s toward the east and the plane is climbing with constant vertical component of velocity of 10 m/s. The magnitude of the force the seat is applying to you is a) zero. b) greater than zero but less than 490 newtons. c) 490 newtons. d) more than 490 newtons but less than 1000 newtons. e) more than 1000 newtons. 3. The pilot of the same airplane levels off so that the plane is now traveling horizontally with the speed of 200 m/s. The pilot lowers one wing so as to make the plane turn in a horizontal circle whose radius is 5.5 km. The plane remains in level flight during the turn and the speed remains constant at 200 m/s. The magnitude of the force exerted by the seat
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## This note was uploaded on 10/05/2009 for the course PHYS 2010 at Colorado.

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CU 2003 fa final exam - Physics 2010 Final Exam December...

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