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:
Synchrony
A simultaneous action or occurrence, or the coordination of events to operate in unison, often observed in human interactions and natural processes.
Infant
A very young child or baby, typically under one year of age, at the early stages of development.
New York Longitudinal Study
The New York Longitudinal Study is a research project that tracked the developmental characteristics of children from infancy into adulthood to understand personality development.
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