A Ball Is Projected Upward at Time T = 0 $58.5 \mathrm {~m} / \mathrm { s }$

question 36

Multiple Choice

A ball is projected upward at time t = 0 s, from a point on a flat roof 10 m above the ground. The ball rises and then falls with insignificant air resistance, missing the roof, and strikes the ground. The initial velocity of the ball is $58.5 \mathrm {~m} / \mathrm { s }$ Consider all quantities as positive in the upward direction. At time $t = 5.97 \mathrm {~s} ,$ the vertical velocity of the ball is closest to

• A)0 m/s.
• B)+175 m/s.
• C)+12 m/s.
• D)-175 m/s.
• E)-12 m/s.

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Definitions:

Control Chart

A tool used in quality control to monitor a process and determine if it is in a state of statistical control by plotting data points over time.

Mean

The sum of a collection of numbers divided by the count of numbers in the collection, also known as the average.

Statistical Process Control

A method used in quality control that employs statistical techniques to monitor and control a process, ensuring it operates at its full potential.

Type I Error

The incorrect rejection of a true null hypothesis, also known as a false positive.