An object is moving in a straight line along the x-axis. A plot of its velocity in the x direction as a function of time is shown in the figure. Which graph represents its acceleration in the x direction as a function of time? 
Definitions:
Identical Twins
Twins who originate from a single fertilized egg that splits into two, sharing identical genetic material.
Alcoholism
A chronic disease characterized by uncontrolled drinking and a preoccupation with alcohol.
Behavioral Genetics
studies the role of genetics and the environment in influencing behavior, examining how heredity interacts with experience to shape who we are.
Identical Twins
Siblings who are genetically identical to each other because they were conceived from the same egg and sperm, and hence share all of their genes.
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