- #1

- 23

- 0

## Homework Statement

A fish starts at rest and uniformly accelerates. After 10 seconds, he is swimming around a rock at a rate of 3.14 rad/sec.

a.) What's the magnitude of angular acceleration?

b.) How many times did the fish circle the rock (how many revolutions?)

## Homework Equations

a.) wf=wi+alpha*t

## The Attempt at a Solution

a.)wf=wi+alpha*t

alpha=(wf-wi)/t

alpha=(3.14rad/sec-0)/10sec

therefore, angular accelerate = .314 rad/sec^2

b.) .314rad/sec^2 *1rev/2pi rad = 0.50 revolutions around the rock.

I just wanted to double check that i did part b correctly because i guess I'm having trouble seeing how the sec^2 on the bottom of the units end up disappearing to become just revolutions.