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Safari File Edit View History Bookmarks Window Help bb.csueas bay.edu Course Materials 20 P bb Quizzes 20154 PHYS 270 bb 0- 3. A graph of position vs. time for a dazed cyclist i x(m) shown. At what time(s) is the cyclist: moving with the greatest velocity? a. b. not moving, i.e., has zero velocity? c. moving with positive velocity? d. moving with negative velocity? 4. Consider the velocity vs. time graph on the right. a. The acceleration is zero for line(s) v(m/s) b. The acceleration is positive for line(s) c. The acceleration is negative for line(s) d. The acceleration is increasing for line(s) 5. For the v vs. t graph, specify the time interval(s) where the acceleration is: 91% Wed 11:00 AM a E 4 6 8 t(s) 2 4 6 8 t(s) t(s)

Explanation / Answer

3)

we that V = dx / dt it means slope of graph at givin instant of time

a) 2-4 sec

b) at t = 2 & t= 4

c) between 2- 4 sec

d) between 0-2 & 4 -8 sec

4)

a) for line C

b) for line D

c) for line A

d) for line B

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