At a Time $t$ Seconds After an Object Is Tossed Vertically Upward, It Reaches

question 30

Multiple Choice

At a time $t$ seconds after an object is tossed vertically upward, it reaches a height $s$ in feet given by the equation:
$$s = 128 t - 16 t ^ { 2 }$$
In how many seconds does the object reach its maximum height?

• A) \(\quad 8 \mathrm { sec }\)
• B) \(\quad 128 \mathrm { sec }\)
• C) \(\quad 4 \mathrm { sec }\)
• D) \(256 \mathrm { sec }\)
• E) \(\quad 2 \mathrm { sec }\)

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Definitions:

Cash Payment

The act of settling a debt or paying for goods or services with cash or equivalent instruments, such as checks.

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A way of preparing the cash flow statement where actual cash flow information from operating activities is used instead of adjustments to net income.

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income that a business receives from its normal business activities, usually from the sale of goods and services to customers.

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Transactions and events that affect the net income of a business, related to its principal revenue-producing activities.