PracticeExam1-2012spring-complete

PracticeExam1-2012spring-complete - PHYS...

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PHYS 172/spring2012-practice Test/Quiz Number: 10 Your Name: -------------------------------------------------- DO NOT OPEN YOUR EXAM UNTIL TOLD Practice Exam I, Phys 172, Spring 2012 1. Write your name on the line above and record it on your scantron form. 2. Record your two-digit Test/Quiz Number on your scantron form. The number is shown at the top of this page. 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 . A page with major equations is provided at the back of this exam. Circle your answers here and on the scantron form. At the end of the exam, or if you finish earlier, please remain seated, raise your hand and a TA will come to you to collect your scantron form and this printout.
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Problems 1-3 use the same graph Problem 1 What are the components of the vector a x ? A) <6, 8> m B) <5, 2> m C) <-3, 5> m D) <8, 6> m E) <-4, 2> m Problem 2 What is the unit vector in the direction of the vector a x ? A) <0.8, 0.6> B) <0.6, 0.8> C) <1, 1> D) <1, 0.75> E) <0.93, 0.37> Problem 3 Which one of the following statements is true about vectors a x , b x and c x ? A) 0 = + + c b a x x x B) b c a x x x = + C) b c a x x x + = D) c b a x x x = - E) 0 = - + c b a x x x
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Problem 4 A cannon ball is shot into air and flies along parabolic trajectory as shown in the picture below. Ignore air friction (drag) and account only for interactions between cannon, ball and the Earth (ignore other celestial bodies). For the time interval when cannon ball flies from point A to B, examine the following statements: 1. The momentum of the cannon ball is conserved 2. The total momentum of the cannon and the ball is conserved 3. The total momentum of Earth, cannon and cannon ball is conserved 4. The total velocity of Earth and cannon is conserved 5. The velocity of the cannon ball is conserved Which statements are correct? A) Only 1 and 5
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This note was uploaded on 02/06/2012 for the course PHYS 172 taught by Professor ? during the Spring '08 term at Purdue University-West Lafayette.

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PracticeExam1-2012spring-complete - PHYS...

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