A particle moves with position function 
Find the normal component of the acceleration vector.
Definitions:
Athletic Prowess
Describes an individual's exceptional skill, ability, or strength in sports and physical activities.
Intellectual Inferiority
refers to the perception or belief that certain individuals or groups have lower cognitive abilities compared to others.
Step-variable
Costs that remain fixed over small ranges of production or activity levels but can change with larger shifts in activity.
Mixed
A category that includes a combination of various elements or types.
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