A Comet Is Observed to Pass 1

question 67

Multiple Choice

A comet is observed to pass 1.50 × 10⁸ m from the surface of the Sun. The Sun's radius is 6.96 × 10⁸ m. What is the speed of the comet at this point, if its speed when passing the Earth's orbit, 1.50 × 10¹¹ m from the Sun's center, is 25 km/s? (M_S = 1.989 × 10³⁰ kg.)

• A) 559 km/s
• B) 618 km/s
• C) 562 km/s
• D) 585 km/s

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