A Jet Aircraft,in Level Flight at Constant Speed,is Observed Directly

question 5

Multiple Choice

A jet aircraft,in level flight at constant speed,is observed directly overhead.A sonic boom is heard later,at which time the line of sight to the aircraft forms a 56° angle with respect to the horizontal.The speed of sound is 325 m/s.What is the Mach number (the ratio of the speed of the jet to the speed of sound) for the aircraft?

• A) 1.2
• B) 1.8
• C) 1.9
• D) 2.1
• E) 2.2

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Definitions:

Direct Method

A cash flow statement preparation method that itemizes actual cash receipts and payments.

Operating Expenses

Costs associated with the day-to-day functions of a business, excluding costs of production or manufacturing.

Prepaid Expenses

Payments made in advance for goods or services, which are recorded as assets until they are actually used.

Noncash Investing

Investment activities that do not involve the immediate outflow of cash but may involve the exchange of non-cash assets or liabilities.