Quiz3 - *220/fall2011 PL03/plqz03.xm for user*ajcg(Last...

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Unformatted text preview: ------------------------------------------------------------------------ *220/fall2011 PL03/plqz03.xm* for user *ajcg* ** /(Last updated: Wed Aug 10 14:28:29 2011)/ Level 1 ------------------------------------------------------------------------ Forces and motion Quiz/Exam questions can be viewed and submitted only once, and, once viewed, must be submitted within the allowed elapsed time. *(A)* If the sum of the forces on an object is constant, then the acceleration is constant. 1. True 2. False ____________________ /[weight: 1]/ *(B)* If an object is acted on by two finite constant forces, is it possible for the object to move at constant velocity? 1. Yes, the forces must be in the same direction 2. Yes, the forces must be perpendicular 3. No, it will accelerate 4. Yes, the forces must be equal and opposite 5. No, it will follow a curved path ____________________ /[weight: 1]/ *(C)* How could you determine acceleration from a graph of velocity versus time? 1. By reading it off the vertical axis 2. From the slope of the line 3. Impossible, you need a plot of acceleration versus time 4. By reading it off the horizontal axis 5. Impossible, you need a plot of velocity vs acceleration ____________________ /[weight: 1]/ ------------------------------------------------------------------------ ...
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