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Safari File Edit View History Bookmarks Window Help 91 %-, Wed 1 1 :00 AM bb.csueastbay.edu ] Course Materials 20154 P https://bb.csueastbay.edu/b... Quizzes - 20154 PHYS 270 https://bb.csueastbay.edu/b Acceleration -YouTube How to take a s 2 4 6 8 t(s) 4. Consider the velocity vs. time graph on the right. a. The acceleration is zero for line(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) v(m/s) t(s) 5. For the v vs. t graph, specify the time interval(s) where the acceleration is: V(m/s) 3 a. zero b. positive_ c. negative d. changing -- 0 2 2 4 6 8 t(s)

Explanation / Answer

4.

a. the slope of the curve indicates the acceleration. the slope of the curve c is zeo.

hence, the acceleration is zero for c.

b.

In line d, the velocity increases linearly with time. So, the acceleration is positive for d.

In line b, the velocity is also increased with time. Hence, the acceleration is positive for b.

c.

In line a, the velocity decreaes with time, so the acceleration is negative for line a.

d.

For lines b and d, the accelration is increased.

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