---
title: "Two people, one of mass \\( 88 \\) \\( \\text{kg} \\) and the other of mass \\( 55 \\) \\( \\text{kg} \\), sit in a rowboat of mass \\( 70 \\) \\( \\text{kg} \\). With the boat initially at rest, the two people, who have been sitting at opposite ends of the boat \\( 3.1 \\) \\( \\text{m} \\) apart from each other, now exchange seats."
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/91377/"
date_modified: "2025-05-08T01:15:28+00:00"
---

# Two people, one of mass \( 88 \) \( \text{kg} \) and the other of mass \( 55 \) \( \text{kg} \), sit in a rowboat of mass \( 70 \) \( \text{kg} \). With the boat initially at rest, the two people, who have been sitting at opposite ends of the boat \( 3.1 \) \( \text{m} \) apart from each other, now exchange seats.

Two people, one of mass \( 88 \) \( \text{kg} \) and the other of mass \( 55 \) \( \text{kg} \), sit in a rowboat of mass \( 70 \) \( \text{kg} \). With the boat initially at rest, the two people, who have been sitting at opposite ends of the boat \( 3.1 \) \( \text{m} \) apart from each other, now exchange seats.

**Part a)** Determine how far the boat will move relative to the water while the people are exchanging seats. *(3 points)*

**Part b)** Indicate whether the boat moves toward the initial position of the \( 88 \) \( \text{kg} \) person or toward the initial position of the \( 55 \) \( \text{kg} \) person. *(3 points)*


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/91377/*