The graph in the figure represents the velocity of a particle as it travels along the x-axis. What is the average acceleration of the particle between t = 2.0 s and t = 4.0 s? 
Definitions:
Monozygotic Twins
Identical twins that develop from a single fertilized egg, sharing the same genetics.
Dizygotic Twins
Twins that develop from two different eggs fertilized by two different sperm, also known as fraternal twins.
Shared Environment
The environmental factors that contribute to the similarities in development and behavior of individuals raised in the same household.
Nonshared Environment
The aspects of the environment that are unique to an individual and not shared with other family members, contributing to differences among siblings.
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