This tutorial teaches students how to measure motion in terms of speed, time, and distance. It defines speed as the distance traveled per unit of time. The document provides examples of constant speed, average speed, and how to calculate speed, time, and distance using the formulas. It includes guided practice problems for students to solve for speed, time, and distance.

1. MEASURING MOTION BY: TOYA LEFTWICH This tutorial will teach students how to measure motion in terms of speed, time, and distance.

2. Navigation Please take a few moments to familiarize yourself with the navigation buttons. The buttons will guide you through the tutorial. First/Home Last Previous/Last Viewed Next Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources

3. Overview How do you describe motion that’s taking place? To describe motion, you must discuss speed. Speed is the distance an object travels per unit of time. To calculate speed to divide the distance it travels by the time it travels. Speed equals distance per time distance (d) time (t) Speed is expressed in: kilometers (km) hour (hr) meters (m) second (s) kilometers (km) hour (hr) Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources

4. Constant Speed An object that does not change it’s speed is traveling at a constant speed. At any given interval, the object has a speed of 10 meters/second. Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources

5. Average Speed Average speed is equal to the total distance divided by the total time. The average speed displayed on the graph is 42 kilometers per hour. Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources

6. Calculating Speed Speed = distance time Time = distance speed Distance = speed x time Hint: Cover the one that you are trying to solve. D S T Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources

7. Guided Practice (S) Solve for speed: Speed = distance time Ex. A car race is 500 km long. It takes the winner 2.5 hours to complete it. How fast was he going? Speed = distance = 500 km = 200 km/hr time 2.5 hrs Ex. If a car travels 9 m in 3 s, what is the speed of the car? ___________ Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources Click

8. Speed = distance = 9 m = 3 m/s time 3 s

9. Guided Practice (T) Solve for time: Time= distance speed Ex. It is 320 km to Las Vegas. If you average 80km/hr, how long will it take for you to get there? Time= distance = 320 km = 4 hrs speed 80km/hr Ex. The boy jogged 60 km in at a speed of 60 km/hr. How long did it take? ____________ Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources Click

10. Time= distance = 60 km = 1 hr speed 60 km/hr

11. Guided Practice (D) Solve for distance: Distance = speed x time Ex. You are going on a trip. You average 80km/hr for 6hrs. How far did you go? Distance = speed x time = 80km/hr x 6hrs = 400 km Ex. The girl averaged 5 miles/hr for 2 hrs. How far did she run? ____________ Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources Click

12. Distance = speed x time = 5mi/hr x 2hrs = 10 miles

13. Assessment Speed = distance time Time = distance speed Distance = speed x time Using the given equations, solve the problems. 1. A football field is about 100 m long. If it takes a person 20 seconds to run its length, how fast (what speed) was he/she running? a. 80 m/s b. 120 m/s c. 5 m/s 2. Every summer I drive to Michigan. It is 3900 km to get there. If I average 100km/hr, how much time will I spend driving? a. 4000 hrs b. 39 hrs c. 10 hrs 3. If you drive at 100 km/hr for 6 hours, far will you go? a. 600 km b 106 km c. 6000 km 4. If you run at 12 m/s for 15 s, how far will you go? a. 180 m b. 0.8 m c. 3 m Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources

14. Resources -Holt, Rinehart and Winston (2001). Holt Science Spectrum: A Physical Approach. Texas -Tennessee End-of-Course Physical Science Coach. (2005). Publisher’s Partnership: Writer Home Navigation Overview Constant Speed Average Speed Calculating Speed Guided Practice (S) Guided Practice (T) Guided Practice (D) Assessment Resources

15. Speed = distance time Time = distance speed Distance = speed x time

16. YIPPEE!