A Baseball Pitcher,loosening Up His Arm Before a Game,tosses a 0.15-Kg

question 12

Multiple Choice

A baseball pitcher,loosening up his arm before a game,tosses a 0.15-kg ball using only the rotation of his forearm,0.32 m in length,to accelerate the ball.If the ball starts at rest and is released with a speed of 12 m/s in a time of 0.40 s,what is the average angular acceleration of the arm and ball?

• A)0.067 rad/s²
• B)94 rad/s²
• C)15 rad/s²
• D)37 rad/s²

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Definitions:

Middle East

A transcontinental region centered on Western Asia and Egypt, known for its historical and strategic significance.

Western Europe

A region comprising countries located in the western part of the European continent, often associated with developed economies and democratic governance.

Disposable Income

Income remaining after deduction of taxes and social security charges, available to be spent or saved as one wishes.

APC

Average Propensity to Consume, which measures the fraction of income that households spend on consumption rather than saving.