Exam-1-02

Exam-1-02 - LAST NAME: . First name and initial: DO NOT...

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DO NOT OPEN YOUR EXAM UNTIL TOLD Exam I, Phys 172, Spring 2009 EXAM # 02 1. Record your two-digit exam version number on scantron form in the field “Test/Quiz number”. Please do not omit leading zero. 2. Write your name in the top-right corner here and on the scantron form 3. Record your PUID number in the respective field on your scantron form Do not use other paper. Write on the back of this test if needed . The page with major equations is provided with this exam (in the back) Circle your answers here and on scantron form. At the end of the exam, you will return scantron form and this printout with circled answers to your TA. LAST NAME: ………………………. First name and initial:
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Problems 1-3: Two hockey pucks with mass 160 g each slide on ice with constant velocities 0 , 10 , 10 1 - = v m/s and 0 , 5 , 5 2 = v m/s. Problem 1 What is the total momentum p of the system consisting of these two hockey pucks? A) <2.4, -2.4, 0> kg . m/s B) <10, -5, 0> kg . m/s C) <2.4, 0.8, 0> kg . m/s D) <2.4, -0.8, 0> kg . m/s E) <0.8, -2.4, 0> kg . m/s Problem 2 After the pucks collide, the first puck velocity changes to 0 , 5 , 5 ' 1 = v . What will be the velocity of the second puck ' 2 v after this collision? A) <10, 10, 0> m/s B) <10, -10, 0> m/s C) <3.1, 4.8, 0> m/s D) <3.1, -4.8, 0> m/s E) <12, -2.1, 0> m/s Problem 3 What is the impulse delivered during the collision to the first puck? A)
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Exam-1-02 - LAST NAME: . First name and initial: DO NOT...

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