Exam 2B (2016).pdf

# Exam 2B (2016).pdf - Physics 1111 Exam#2B-11:00 Solutions...

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Physics 1111 Exam #2B-11:00 Solutions 13 October 2016 Last Name: Part I II III IV V Total Score Grade Score /12 /24 /27 /21 /16 /100 /100 I: Multiple-Choice Questions (12 points) For each question below, choose the single best response and write the corresponding capital letter in the box provided. There is no penalty for guessing. 1. An object is observed to be moving at a constant velocity in an inertial reference frame. It follows that D A. the force of its motion balances its inertia. B. no forces act on the object. C. a constant force acts on the object in the direction of motion. D. the net force acting on the object is zero. E. the net force acting on the object is equal and opposite to its weight. 2. A piano is sitting on the floor of an elevator. The elevator is moving downwards with steadily increasing speed. What can you say about the normal force of the floor of the elevator on the piano?
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