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lesson pretestMultiple Choice

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Question 1 • Physics I

The gravitational force between a satellite and Earth’s moon is 324 cap n The mass of the moon is 7 point 3 times 10 to the 22th power kilograms If the distance from the moon to the satellite is 2 point 6 times 10 to the 6th power m , what is the mass of the satellite?

Answer
A
450 kilograms
B
230 kilograms
C
1 point 7 times 10 to the negative 4 power kilograms
D
2 point 2 times 10 to the negative 3 power kg

Explanation

Use Newton’s law of gravitation, F = GmM/r², and solve for the satellite’s mass: m = Fr²/(GM). Substituting the values gives m = 324(2.6 × 10⁶)² / [(6.67 × 10⁻¹¹)(7.3 × 10²²)] ≈ 450 kg. Therefore, the satellite’s mass is 450 kilograms.

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