PHYS171exampleexam1

PHYS171exampleexam1 - PHYS171 Name: _ Exam 1 Fall 2010...

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PHYS171 Exam 1 Fall 2010 Name: _____________________ Student ID #: ________ Short Answer Questions 1) Sketch a graph of position vs time, velocity vs. time and acceleration vs. time. for a car that has constant acceleration of 2 m/s 2 for 5 seconds as it accelerates from a stop, then continues at constant velocity of 10 m/s for 5 seconds . Axes should be labeled with correct units and correct values when possible. (5 points) 2) A particle at the origin ( j i ˆ 0 ˆ 0 + ) reaches a position ( j i ˆ 5 ˆ 3 + ) after 10 seconds. What is the average velocity direction and magnitude. Express direction as angle with the positive x axis. (5 points) 3) You are riding in a train car that is accelerating at constant rate as it leaves the station. You face forward and throw a ball up vertically in the air. Which is true? It (a) might land on the passenger in front of you, (b) might land on the passenger behind you, (c) will fall right back into your hand. (5 points) 4) A ball has radius 0.1m with uncertainty 0.01m.
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This note was uploaded on 12/29/2011 for the course PHYSICS 171 taught by Professor La porta during the Fall '11 term at Maryland.

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PHYS171exampleexam1 - PHYS171 Name: _ Exam 1 Fall 2010...

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