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PHY 101 PHY 101 Past Questions Objective Question
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Question

The mean diameters of Mars and Earth are 6.9 × 10^3 km and 1.3 × 10^4 km respectively. If Earth's gravitational acceleration is 9.8 m/s² and Mars' mass is much smaller, which of the following values best approximates the gravitational acceleration and escape speed on Mars?
Options
A 3.8 m/s², 5.0 km/s
Correct Answer
B 8.3 m/s², 50 m/s
C 5 m/s², 38 m/s
D 6.9 m/s², 13.4 km/s
Correct Answer

Option A is the correct answer.

Detailed Explanation

Mars gravity ≈ 3.7–3.8 m/s² and escape velocity ≈ 5 km/s (standard planetary values).

Hint

Recall known Mars constants.

Question Info

Course: PHY 101
Topic: PHY 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 234 of 1250
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