---
title: "A person holds a ball in her hand."
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url: "https://nerd-notes.com/ubq/90790/"
date_modified: "2026-08-18T02:39:55+00:00"
---

# A person holds a ball in her hand.

A person holds a ball in her hand.

**Part a)** Identify all the external forces acting on the ball and the Newton’s third-law reaction force to each one. *(3 points)*

**Part b)** If the ball is dropped, what force is exerted on it while it is falling? Identify the reaction force in this case. (Ignore air resistance.) *(3 points)*


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/90790/*