practice exam 1

practice exam 1 - Physics 140 Midterm 1 October 5 2000...

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Physics 140 Midterm 1 – October 5, 2000 Version 1 Choose the best answer and mark it on your answer sheet. Ten points per problem. 1. A truck traveling at a constant speed of 80 km/h (22.2 m/s) passes a more slowly moving car. The instant the truck passes the car, the car begins to accelerate at a constant rate of 1.2 m/s 2 and passes the truck 500m farther down the road. What is the speed of the car when it passes the truck. A. 28 m/s B. 36 m/s C. 41 m/s D. 44 m/s E. 49 m/s 2. A flea can jump a vertical height h. What is the maximum horizontal distance it can jump? A. 1.4 h B. 1.5 h C. 1.75 h D. 1.8 h E. 2.0 h
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3. A hunter uses a stone attached to the end of a rope as a crude weapon. The stone is swung overhead in a horizontal circle 1.6 m in diameter at the rate of 3 revolutions per second. What is the centripetal acceleration of the stone?
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