# Rotational Motion and Linear Speec

## Homework Statement

A rubber ball with a radius of .048 m rolls along the horizontal surface of a table with a constant linear speed v. When the ball rolls off the edge of the table, it falls 0.85 m to the floor below. If the ball completes 0.82 revolutions during its fall, what was its linear speed, v?

## Homework Equations

I know to find linear speed the equation v=rw must be used.

## The Attempt at a Solution

I tried to turn revolutions into radians and then use the equation T=2pi/w
and then did v=rw. I don't really know where to begin this problem since the problem has revolutions and not rpm. When i solved it like rpm it didn't work.

## Homework Statement

A rubber ball with a radius of .048 m rolls along the horizontal surface of a table with a constant linear speed v. When the ball rolls off the edge of the table, it falls 0.85 m to the floor below. If the ball completes 0.82 revolutions during its fall, what was its linear speed, v?

## Homework Equations

I know to find linear speed the equation v=rw must be used.

## The Attempt at a Solution

I tried to turn revolutions into radians and then use the equation T=2pi/w
and then did v=rw. I don't really know where to begin this problem since the problem has revolutions and not rpm. When i solved it like rpm it didn't work.