2. Unit #5: Introduction to Trigonometry
Accel Precalc
Unit #5: Introduction to Trigonometry
Lesson #3: Linear and Angular Speed
EQ: How do you calculate linear and angular
speed?

3. Angular Speed --- angle covered for a given amount of time
Units Used to Describe Angular Speed:
revolutions per minute
rpm
degrees per second
deg/sec
radians per hour
rad/hr

4. Linear Speed --- distance travelled for a given amount of time
Units Used to Describe Linear Speed:
meters per second
m/sec
miles per hour
mph
Relationships:
1 revolution = 1 rotation around circle

5. Angular Measurement: 1 revolution = 2π radians Linear Measurement:
Formulas:
C = 2πr = πd

6. 20
4.58
316,800

7. 88
272.73
245

8. Ex. Find the linear speed for each circular object.

10. Ex. Find the angular speed for each.

12. Day 43 Agenda:
DG minutes

15. ASSIGNMENT: (15 minute worktime)
Worksheet #1 “Angular and Linear Speed”
Textbook: p. 293 – 294 #93 – 98
Worksheet #2: “Angular and Linear Speed”
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