Neglect the mass of the roller and its size d in the computations, the acceleration of the roller, [tex]a_A[/tex] = 193 ft/s². (True)
Acceleration is a vector quantity because it has both magnitude and direction. It is also the second derivative of position with respect to time or the first derivative of velocity with respect to time.
When the velocity of an object changes, it is said to be accelerated. The velocity of an object can change due to an increase or decrease in speed or a change in direction of motion.
A few examples of acceleration include an apple falling to the ground, the moon orbiting the earth, and a car stopped at a traffic light. Through these examples, we can see that acceleration occurs when the direction of a moving object changes or when its speed increases or decreases.
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