---
title: "A high-speed drill rotating counterclockwise at \\( 2400 \\) \\( \\text{rpm} \\) comes to a halt in \\( 2.5 \\) \\( \\text{s} \\)."
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url: "https://nerd-notes.com/ubq/39130/"
date_modified: "2025-03-14T05:48:57+00:00"
---

# A high-speed drill rotating counterclockwise at \( 2400 \) \( \text{rpm} \) comes to a halt in \( 2.5 \) \( \text{s} \).

A high-speed drill rotating counterclockwise at \( 2400 \) \( \text{rpm} \) comes to a halt in \( 2.5 \) \( \text{s} \).

**Part a)** What is the magnitude of the drill’s angular acceleration? *(3 points)*

**Part b)** How many revolutions does it make in those \( 2.5 \) \( \text{s} \)? *(3 points)*


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/39130/*