---
title: "Ball A is dropped from a building of height H. Ball B is dropped from a building of height 3.5H. Using energy, what the ratio of vA to vB (final velocity of ball A to final velocity of ball 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/21404/"
date_modified: "2025-04-09T01:59:29+00:00"
---

# Ball A is dropped from a building of height H. Ball B is dropped from a building of height 3.5H. Using energy, what the ratio of vA to vB (final velocity of ball A to final velocity of ball B).

Ball \(A\) of mass \(m\) is dropped from a building of height \(H\). Ball \(B\) of mass \(1.7 \, \text{m}\) is dropped from a building of height \(1.7H\). Using energy, what the ratio of \(v_A\) to \(v_B\) (final velocity of ball \(A\) to final velocity of ball \(B\)). Air resistance is negligible.

- **A.** \[ \sqrt{\frac{1}{6}}\]
- **B.** \[ \sqrt{\frac{2}{7}} \]
- **C.** \[ \frac{2}{5} \]
- **D.** \[ \frac{1}{3.5} \]
- **E.** \[ \frac{2}{5}\]

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/21404/*