Exam #1A F09 - Moorpark College Physics Department Physics...

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Page 1 of 3 1. A student, who normally weighs 600. N, is in an elevator which is accelerating downward at 0.400 g. If the student stood on a bathroom scale inside the elevator, what would the scale read? a. still 600. N b. 840. N c. 360. N d. 240. N e. None of the above is even close! 2. If the acceleration of a body is zero then it's jerk must be, a. zero. b. positive. c. negative. d. You can't tell without more information! 3. Inertia is directly related to a body's, a. weight. b. mass. c. density. d. net external force. e. All of the above! 4. A book with a mass of 2.50 kg is sitting at rest on a horizontal table with a coefFcient of static friction of 0.215. Besides it's weight, friction, and the reaction force of the table, no other exter- nal forces are acting on the book. What is the force of static friction? a. 24.5 N b. 5.27 N c. 0.538 N d. zero e. None of the above! 5. Which of the following numbers has the most signiFcant Fgures? a.
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Exam #1A F09 - Moorpark College Physics Department Physics...

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