What Is the Escape Speed from a Planet of Mass

question 21

Multiple Choice

What is the escape speed from a planet of mass M and radius R if M = 3.2 × 10²³ kg and R = 2.4 × 10⁶ m?

• A) 5.5 km/s
• B) 4.2 km/s
• C) 5.2 km/s
• D) 4.8 km/s
• E) 3.7 km/s

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Definitions:

Southern Hemisphere

The half of the Earth that is south of the Equator, characterized by opposite seasons to the Northern Hemisphere.

Boreal Forest

The northern coniferous forest biome found primarily in Canada, northern Europe, and Siberia; also called taiga.

Corresponding Latitudes

Locations across the globe that share the same distance north or south of the Equator.

Tundra

A cold, treeless biome found in the Arctic and atop mountains, where the climate is characterized by very low temperatures, short growing seasons, and permafrost.