---
title: "A \\(10 \\, \\text{kg}\\) box is pushed to the right by an unknown force at an angle of \\(25^\\circ\\) below the horizontal while a friction force of \\(50 \\, \\text{N}\\) acts on the box as well. The box accelerates from rest and travels a distance of \\(4 \\, \\text{m}\\) where it is moving at \\(3 \\, \\text{m/s}\\)."
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url: "https://nerd-notes.com/ubq/29519/"
date_modified: "2025-09-15T03:51:46+00:00"
---

# A \(10 \, \text{kg}\) box is pushed to the right by an unknown force at an angle of \(25^\circ\) below the horizontal while a friction force of \(50 \, \text{N}\) acts on the box as well. The box accelerates from rest and travels a distance of \(4 \, \text{m}\) where it is moving at \(3 \, \text{m/s}\).

A \(10 \, \text{kg}\) box is pushed to the right by an unknown force at an angle of \(25^\circ\) below the horizontal while a friction force of \(50 \, \text{N}\) acts on the box as well. The box accelerates from rest and travels a distance of \(4 \, \text{m}\) where it is moving at \(3 \, \text{m/s}\).

**Part a)** What is the value of the unknown force? *(3 points)*

**Part b)** What is the magnitude of normal force acting on the box? *(3 points)*


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/29519/*