Midterm 2 Sample 1 - Name: Student Number: Instructor:...

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PHY 1B03 Term Test #2 Circle one letter only for each multiple choice question to indicate the correct answer. The McMaster standard calculator is allowed. A formula sheet can be found attached to this test paper. There are a total of 15 multiple choice questions all with equal value. Use g = 9.81 m s -2 . All portable communications devices (pagers, cellular phones, etc) must be off during tests. Name: Student Number: Instructor: Section Number:
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2 1) A useful kinematic equation is v f 2 =v i 2 + 2ad. You drop a ball (with zero initial velocity) from the top of a building to measure the acceleration due to gravity. If you measure the final velocity to be v f ± v f , and the height of the building to be d ± d , what is the relative uncertainty in your determination of the acceleration? a) d d v v a a f f + = 2 b) d v a a f + = 2 c) d v a a f = 2 d) d d v v a a f f = 2 e) d d v v a a f f = 2) A stunt man jumps from the roof of a tall building, but no injury occurs because the person lands on a large, air-filled bag. Which one of the following statements best describes why no injury occurs? a) The bag provides the necessary force to stop the person. b) The bag reduces the impulse to the person. c) The bag reduces the change in momentum. d) The bag decreases the amount of time during which the momentum is changing and reduces the average force on the person. e) The bag increases the amount of time during which the momentum is changing and
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This note was uploaded on 07/23/2008 for the course SCIENCE PHYSICS 1B taught by Professor Hughes during the Winter '08 term at McMaster University.

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Midterm 2 Sample 1 - Name: Student Number: Instructor:...

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