The figure shows a graph of the velocity of an object as a function of time. What is the average acceleration of the object over the following time intervals?
(a)From t = 0 s to t = 5.0 s
(b)From t = 0 s to t = 8.0 s 
Definitions:
Symbolic Self-Completion Theory
A psychological theory suggesting individuals seek to acquire and display symbols that are connected to their self-definitions, especially when they feel incomplete in a social role.
Self-As-Other Models
Psychological frameworks suggesting individuals can understand and assess themselves by adopting the perspectives of others.
Stereotype
A fixed and oversimplified image or idea of a particular type of person or thing, often based on limited information or false assumptions.
Symbolic Self-Completion
The theory that individuals seek to acquire and display symbols that are associated with their personal goals and identity.
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