Planet a Has Twice the Mass of Planet B

question 113

Multiple Choice

Planet A has twice the mass of Planet B.From this information,what can we conclude about the free-fall acceleration at the surface of Planet A compared to that at the surface of Planet B?

• A)The free-fall acceleration on Planet A must be twice as great as the free-fall acceleration on Planet B.
• B)The free-fall acceleration on Planet A must be four times as great as the free-fall acceleration on Planet B.
• C)The free-fall acceleration on Planet A is the same as the free-fall acceleration on Planet B.
• D)The free-fall acceleration on Planet A is greater than the free-fall acceleration on Planet B, but we cannot say how much greater.
• E)We cannot conclude anything about the free-fall acceleration on Planet A without knowing the radii of the two planets.

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