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# rev2sp10 - TA Tomoyuki Nakayama January 18th January 19th...

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TA: Tomoyuki Nakayama January 18 th – January 19 th , 2010 PHY 2048: Physics 1 with Calculus, Spring 2010 Review: Chapter 2.6-3.8 The purpose of this review is to refresh your memory. Physics is a cumulative subject, so make it sure you understand basic concepts and typical problem solving techniques in previous chapters before moving on to a new chapter. ________________________________________________________________________________ A. 1D Motion w/ Constant Acceleration 1. A car is moving in a straight line with a constant speed. You know the initial velocity, final velocity and the time interval of the motion. What is the easiest way to find the displacement? 2. A car traveling at a constant speed of 20 m/s passes a trooper. One second later, the trooper sets off in chase with a constant acceleration of 4 m/s 2 . How long does it take the trooper to overtake the car? B. Free Fall 1. A projectile is moving in the vertical direction. What is the velocity at the top of the motion? 2. Two balls are thrown from the top of a building. One is upward and the other one is downward with the same initial speed. Which one is faster when they hit the ground?

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