1. An arc of length 100m is formed by a

central angle. The radius is 50m. Find

the central angle in degrees.

2. How many revolutions will a car wheel

of diameter 30 in make as the car travels

one mile?

3. Convert 30 mph to feet/second.

DC2

Unit 1 – Angular and Linear Speed

-You will be able to find the angular speed and linear speed of spinning objects.

Classwork: pg 3, ex #7

A boy rotates a stone in a 3 ft. long sling at the rate of 15 revolutions every 10 seconds. Find the angular and linear velocities of the stone.

Classwork: pg 4, ex #9

A woman is riding a bicycle whose wheels are 26 inches in diameter. If the wheels rotate at 125 revolutions per minute (rpm), find the speed at which she is traveling in mph?

Homework #3

• Page 238 #34-42, 75-77