An Airplane Flying at an Altitude of 5 Miles Passes

question 76

Multiple Choice

An airplane flying at an altitude of 5 miles passes directly over a radar antenna. When the airplane is 50 miles away (s = 50) , the radar detects that the distance s is changing at a rate of 280 miles per hour. What is the speed of the airplane? Round your answer to the nearest integer.

• A)281 mi/hr
• B)271 mi/hr
• C)563 mi/hr
• D)141 mi/hr
• E)135 mi/hr

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Definitions:

Shortened Eyeball

An eyeball that is shorter than normal, often associated with hyperopia or farsightedness.

Light Rays

Streams of photons, which are elementary particles of light, that travel in straight lines and are visible when they encounter an object or substance.

Magnifying Lens

An optical lens or device designed to enlarge the appearance of objects viewed through it.

Light Source

Any device or natural entity that emits light, used to illuminate environments or as part of visual presentations.