An Airplane Flies in a Horizontal Circle of Radius 500

question 27

Multiple Choice

An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the radius were changed to 1000 m, but the speed remained the same, by what factor would its centripetal acceleration change?

• A) 0.25
• B) 0.50
• C) 1.00
• D) 2.00
• E) 4.00

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Definitions:

Pythagorean Theorem

A theorem that states that the square of the sides of a right triangle are equal to the square of the hypotenuse.

Hypotenuse

In a right-angled triangle, the longest side, which sits opposite the right angle.

Opposite Side

In geometry, it refers to the side facing away in relation to another side, often in triangles or other polygons.

Hypotenuse

The longest side of a right-angled triangle, opposite the right angle.