Quiz 1B key

# Quiz 1B key - everyone credit on this one! Again, when...

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P h y s i c s 2 2 1 Q u i z 1 Answer YES or NO to each question. 1. Can an object have a zero velocity and a nonzero acceleration? YES. Consider an object in free-fall motion, at its apex. 2. Can an object with constant acceleration reverse its direction of travel? YES. Consider an object in free-fall motion, at its apex. 3. Will an object with constant, nonzero acceleration have constant velocity? NO. If acceleration is nonzero, then velocity is undergoing some change, and is therefore not constant. 4. Will an object with constant, nonzero acceleration ever come to rest? YES (it can). I should have said “Can” instead of “Will,” so I’m going to give
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Unformatted text preview: everyone credit on this one! Again, when thinking about this situation, consider an object in free-fall motion, at its apex. 5. Can an object have a zero velocity and a nonzero displacement? YES. This would just mean that an object is at rest when its displacement is nonzero. If we said the launch point of a free fall object (launched upward in 1-D) is at the origin of our coordinate system, then at the apex of motion that object would have a zero velocity and a nonzero displacement....
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## This note was uploaded on 10/03/2010 for the course PSYCH PSYCH 211 taught by Professor Diemel during the Spring '10 term at Shoreline.

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