A Pitcher Delivers a Fast Ball with a Velocity of 43

question 68

Multiple Choice

A pitcher delivers a fast ball with a velocity of 43 m/s to the south. The batter hits the ball and gives it a velocity of 51 m/s to the north. What was the average acceleration of the ball during the 1.0 ms when it was in contact with the bat?

• A)4.3 × 10⁴ m/s², south
• B)5.1 × 10⁴ m/s², north
• C)9.4 × 10⁴ m/s², north
• D)2.2 × 10³ m/s², south
• E)7.0 × 10³ m/s², north

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Definitions:

Brain's Growth

The process of physiological and structural development of the brain, often most rapidly occurring in childhood and adolescence.

Neuronal Pruning

The process by which extra neurons and synaptic connections are eliminated in order to increase the efficiency of neuronal transmissions.

Cell Death

The process by which a cell ceases to function and is eliminated, which can be a natural part of development or result from disease.

Brain Efficiency

The ability of the brain to perform tasks quickly and accurately using the least amount of mental effort.