P207 Assignment 3 (Fall 2008) - TA's Name:_ Section: _ Your...

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TA's Name:____________________ Section: ____ Your Name: _________________________________ Physics 207, Fall 2008 1 Cornell University Assignment 3 Concepts: projectile motion mass and force uniform circular motion Newton’s First, Second, and Third Law relative motion gravity and tension forces Reading in text: Chapter 4: Sections 5-9; Chapter 5: Sections 1-8. Assignment: Due in lecture on Wednesday, September 17. Please turn in this sheet stapled to the top of your work. A. On-Line Math Warm-Up Problems: If you'd like some practice with the math skills relevant to the work we're doing this week and next, please go to www.blackboard.cornell.edu , log in to the Physics 207 Math Review website, and then do the Unit Tests on Triangles and Vectors, Proportions, Sines and Cosines 1, and Units and Dimensions. You can attempt the tests as many times as you like. B. Physics Problems 1. A baseball leaves a pitcher’s hand horizontally at a speed of 161 km/h. The (horizontal) distance to the batter is 18.3 m. Ignore the effects of the air (and thus spin) and use g =10 m/s 2 . (a) Sketch ) ( t x v and ) ( t y v on separate graphs, one below the other, using the same time scale in both graphs. Your graphs need only cover the interval from the time the ball leaves the pitcher’s hand until it arrives at the batter. (b) How long does the ball take to travel the first half of the (horizontal) distance from the pitcher to the batter?
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This note was uploaded on 10/26/2008 for the course PHYS 2207 taught by Professor Liepe, m during the Fall '07 term at Cornell University (Engineering School).

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P207 Assignment 3 (Fall 2008) - TA's Name:_ Section: _ Your...

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