Question

Please help ASAP !!!

The velocity-versus-time graph for a shuttle bus moving along a straight path is shown in Figure 13.

b. Identify the time intervals during which the acceleration of the shuttle bus is constant.

c. Find the value for the average velocity of the shuttle bus during each time interval identified in b.

d. Find the acceleration of the shuttle bus during each time interval identified in b.

http://www.mredwards.net/files/59.pdf
these are the answers and the image is on here.. but i dont understand how to get the answers for c and d

Answer 1

For (c), you just have to know that \(\bar v= \dfrac{v+v_0}{2}\) where \(v\) and \(v_0\) are the ends of the intervals.

For (d), you just have to know that \(a\) is the area between the \(t\)-axis and the curve. You can just look at the plot geometrically!

Answer 2

Any questions?

Answer 3

can you wait for like 30 min ? ill be back !

Answer 4

Haha, I'm not sure if I'll be on or not. I'll help if I have time! Take care!

Answer 5

okay. lets say i have 0-30 sec. would it be Vavg = 0+30 /2 ?

Answer 6

It would be the velocity at \(t=0\) plus the velocity at \(t=30\), all divided by \(2\).

I think that's what they want here. The intervals are hard to see in the book's picture.

Answer 7

So I think the velocity is \(0\) at both ends, so \(\dfrac{0-0}{2}=0\)