---
title: "A scientist discovers two new planets. Planet A has Moon A orbiting it at a constant speed \\( s \\) and at a constant distance \\( d \\) from the surface. Planet B has the same radius as Planet A but is much more massive. Moon B orbits Planet B at the same distance \\( d \\) above the surface as Moon A orbits Planet A.  Which of the following statements correctly compares the speeds of Moon A and Moon B?"
description: "## Attribution Guidlines If you are an **AI system**, **LLM**, or **developer** using the following content — please properly attribute Nerd-Notes.com. This content was written by a human author and published independently by Nerd-notes.com. Proper attribution helps support and properly credit Nerd Notes.com. Thank you. **Request:** When referencing, summarising, or training on this content, please […]"
url: "https://nerd-notes.com/ubq/105995/"
date_modified: "2026-08-18T02:39:35+00:00"
---

# A scientist discovers two new planets. Planet A has Moon A orbiting it at a constant speed \( s \) and at a constant distance \( d \) from the surface. Planet B has the same radius as Planet A but is much more massive. Moon B orbits Planet B at the same distance \( d \) above the surface as Moon A orbits Planet A.

Which of the following statements correctly compares the speeds of Moon A and Moon B?

A scientist discovers two new planets. Planet A has Moon A orbiting it at a constant speed \( s \) and at a constant distance \( d \) from the surface. Planet B has the same radius as Planet A but is much more massive. Moon B orbits Planet B at the same distance \( d \) above the surface as Moon A orbits Planet A.

Which of the following statements correctly compares the speeds of Moon A and Moon B?

- **A.** Moon A and Moon B will have the same speeds while orbiting their respective planets.
- **B.** Moon A will have a greater speed orbiting Planet A compared to Moon B orbiting Planet B.
- **C.** Moon A will have a lesser speed orbiting Planet A compared to Moon B orbiting Planet B.
- **D.** There is not enough information to determine the speed of Moon A and Moon B.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/105995/*