A Baseball Pitcher Loosens Up His Pitching Arm

question 15

Multiple Choice

A baseball pitcher loosens up his pitching arm.He tosses a 0.20-kg ball using only the rotation of his forearm,0.32 m in length,to accelerate the ball.What is the moment of inertia of the ball alone as it moves in a circular arc with a radius of 0.32 m?

• A) 1.5 × 10−² kg·m²
• B) 2.0 × 10−² kg·m²
• C) 4.0 × 10−² kg·m²
• D) 7.6 × 10−² kg·m²

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Definitions:

Dispersed

Spread out or scattered, not concentrated in one area.

Data Distribution

The way in which data points are spread or dispersed across values in a dataset.

Skewness

A measure of the asymmetry of the probability distribution of a real-valued random variable; indicates how the tail on one side of the distribution compares to the tail on the other side.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, indicating how much the values deviate from the mean.