Asteroid Ida Was Photographed by the Galileo Spacecraft in 1993,and

question 16

Multiple Choice

Asteroid Ida was photographed by the Galileo spacecraft in 1993,and the photograph revealed that the asteroid has a small moon,which has been named Dactyl.From the dimensions of Ida and its general features,one can estimate the mass of Ida to be 4.5 × 10¹⁶ kg,and the distance between Dactyl and Ida is approximately 90 km.Assuming a circular orbit,what would be the orbital speed of Dactyl? (G = 6.67 × 10^-11 N ∙ m²/kg²)

• A)5.8 m/s
• B)11 m/s
• C)2.3 m/s
• D)2.9 m/s
• E)30 m/s

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Definitions:

Work Ethics

Principles that govern a person's conduct at work, typically emphasizing hard work, integrity, and responsibility.

Special Project Group

A team assembled for a defined period to focus on a specific goal or project, often cross-functional in nature.

Social Loafing

The phenomenon where individuals exert less effort to achieve a goal when they work in a group than when they work alone.

Free Riders

Individuals who benefit from resources, goods, or services without paying for them or contributing to their cost.