Velocity vs. Time Graphical Interpretation

[1337Montage]

Homework Statement

1) Time = 0 to 2.5s
a. What is the velocity during this time?
b. Determine the displacement traveled during this time.
c. What is the acceleration during this time?

2) Time = 5.5 to 10s
a. What is the velocity during this time?
b. Determine the displacement traveled during this time.
c. What is the acceleration during this time?

3) Find the total displacement traveled during the five different phases of motion. (Use Graphical Methods)
- I shaded the regions with a pencil for the displacement that is needed. There are supposed to be 4 triangles and one rectangle.

Homework Equations

I think:
v=d/t
a=vt
Under General: https://www.physicsforums.com/showpost.php?p=905663&postcount=2

The Attempt at a Solution

I finished all of the other questions, but the ones I listed above are the only ones I need which I find confusing and don't have any idea on how to start it off. Please help me on any of the answers to any question that you know. Help is appreciated. Thanks.

 

[PhanthomJay]

Graphically, the velocity you can pick off the graph (it is variable during the accelerating phases); the acceleration , since a =delta v/delta t, you should be able to identify using slopes; and displacement, as you noted, is the shaded area during the given time periods, paying attention to positive and negative areas.