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## AP®︎/College Physics 1

### Course: AP®︎/College Physics 1>Unit 5

Lesson 3: Rotational kinematics

# Rotational kinematics

AP.PHYS: INT‑3.A (EU), INT‑3.A.1 (EK), INT‑3.A.1.1 (LO)
You might need: Calculator

## Problem

A merry-go-round has an initial angular velocity of 10, point, 2, start text, r, p, m, end text. At the end of the ride, the brakes are applied, giving it a constant angular deceleration of 0, point, 032, start text, r, a, d, slash, s, end text, squared as the ride slows to a stop.
A diagram shows a merry-go-round that rotates counterclockwise around a central axis.
Determine the angular velocity of the ride, in start text, r, a, d, slash, s, end text, after it has made two revolutions during the braking period.
Write the answer using two significant figures.
start fraction, start text, r, a, d, end text, divided by, start text, s, end text, end fraction
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