---
title: "Find the following three values using just rotational kinematics.   A ball rolls down a 1.5-meter long incline from rest to 3.2 m/s. The ball has a 16.0 cm radius. Find the angular acceleration of the ball. A CD player spins at 7329 rpm. It starts from rest and has an acceleration of 419 rad/s2. How long does it take to reach full speed? A rotating object has a uniform angular acceleration of 5.15 rad/s2. How long does it take to speed up from 3.33 rad/s to 33.3 rad/s?"
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url: "https://nerd-notes.com/ubq/21876/"
date_modified: "2024-04-30T06:36:26+00:00"
---

# Find the following three values using just rotational kinematics.   A ball rolls down a 1.5-meter long incline from rest to 3.2 m/s. The ball has a 16.0 cm radius. Find the angular acceleration of the ball. A CD player spins at 7329 rpm. It starts from rest and has an acceleration of 419 rad/s2. How long does it take to reach full speed? A rotating object has a uniform angular acceleration of 5.15 rad/s2. How long does it take to speed up from 3.33 rad/s to 33.3 rad/s?

Find the following three values using just rotational kinematics.

**Part a)** A ball rolls down a 1.5-meter long incline from rest to 3.2 m/s. The ball has a 16.0 cm radius. Find the angular acceleration of the ball. *(1 points)*

**Part b)** A CD player spins at 7329 rpm. It starts from rest and has an acceleration of 419 rad/s2. How long does it take to reach full speed? *(1 points)*

**Part c)** A rotating object has a uniform angular acceleration of 5.15 rad/s2. How long does it take to speed up from 3.33 rad/s to 33.3 rad/s? *(1 points)*


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/21876/*