A Racecar, Traveling at Constant Speed, Makes One Lap Around

question 49

Multiple Choice

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t. Note: The circumference of a circle is given by C=2πr.
-Which one of the following statements concerning this car is true?

• A)The displacement of the car does not change with time.
• B)The instantaneous velocity of the car is constant.
• C)The average speed of the car is the same over any time interval.
• D)The average velocity of the car is the same over any time interval.
• E)The average speed of the car over any time interval is equal to the magnitude of the average velocity over the same time interval.

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Definitions:

Beginning Inventory

The price of merchandise available for purchase at the commencement of a fiscal period.

Freight-in

The cost of shipping goods into a business, which is often included in the cost of inventory.

Cost of Goods

Cost of Goods refers to the direct costs attributable to the production of the goods sold by a company, including materials and labor.

Ending Inventory

At the close of an accounting period, the valuation of merchandise ready for sale is identified by summing up the initial inventory with buys and deducting the expense of goods sold.