PHYSICS 7A Midterm: physics7A-fa2003-mt1-Yu-exam

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8 Jan 2019
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Instructions: this is a closed book exam. You are allowed to bring along only one 3 x5 cheat sheet , pens, pencils, scientific calculator, and blue books: read all questions carefully. In case you make mistakes be sure to cross them out so they will not be mistaken as your answer. When you substitute numbers into these symbols to obtain a numerical answer, make sure that you specify also the units. On the other hand, a pure numerical answer without calculation to support it will get no credit. You are provided with the following constants for your reference. There is no guarantee that they will all be required in solving the problems. Useful constant: p=3. 1416; g=9. 803 m/s2; 1 mile=1. 61 km; 1 mph=0. 447 m/s; The advertisement for a sports car claims that the car can reach a speed of 60 miles per hour (mph) from rest in 6 seconds.