2048_Fall08_FinalExam

2048_Fall08_FinalExam - 77777 Instructor(s Mueller/Rinzler...

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77777 77777 1. A race car traveling with constant acceleration increases its speed from 10 m/s to 50 m/s over a distance of 60 m. What is its acceleration? (1) 20 m/s 2 (2) 8 m/s 2 (3) 12 m/s 2 (4) 16 m/s 2 (5) 40 m/s 2 2. If the y-component of a vector ~ A , in the xy plane, is half as large as the magnitude of the vector, the angle between the vector and the x-axis is: (1) 30 (2) 60 (3) 45 (4) 90 (5) 20 3. An object is constrained by a cord to move in a circular path of radius 0.5 m on a horizontal frictionless surface. The cord will break if its tension exceeds 16 N. The maximum kinetic energy the object can have is:
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2048_Fall08_FinalExam - 77777 Instructor(s Mueller/Rinzler...

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