1. Catalyst 1. What is the difference between speed and velocity?
2. Put these objects in order from slowest to fastest:
Peregrine falcon
Cheetah
Human
Car (at the highway speed limit)
Mako shark
Ocean wave
Maglev train

2. Catalyst Put these objects in order from slowest to fastest:
Peregrine falcon (#6, 200 mph)
Cheetah (#5, 70 mph)
Human (#2, 25 mph)
Car (at the highway speed limit) (#4, 60 mph)
Mako shark (#3, 31 mph)
Ocean wave (#1, 4.5 mph)
Maglev train (#7, 350 mph)

3. Speed and Velocity

4. Formulas Speed speed = distance time s = d t
*speed of a car is mph = miles = distance
hour time

5. Speed vs. Velocity speed: how fast an object is moving Ex: 35 m/s
velocity: how fast an object is moving in a given direction
Ex: 35 m/s west

6. IFAS Problem Solving IFAS Info – all information given
Formula - written and ready to use
Algebra - work shown with numbers and units
Solution - circled and identified

7. My Example
Ex1: Calculate the speed for a car that went a distance of 120 miles in 2 hours time.
d=120 miles
t=2 hours
s=d/t
s=120mi / 2hr
s= 60 mi/hr or 60 mph

8. Your Example
Ex2: A baseball is thrown a distance of 60 feet. What is its velocity if it takes 5 seconds to cover the distance from the pitcher’s mound to home plate?

9. My Example
Ex3: How much time does it take for a bird flying at a velocity of 45 miles per hour south to travel a distance of 1,800 miles?

10. Formulas d s t

11. Your Example
Ex4: A comet is cruising through the solar system at a speed of 50,000 km per hour for 4 hours. What is the total distance traveled by the comet during this time?

12. Graphing Distance vs. Time
Times (s)
Distance (m) for Car 1
Distance (m) for Car 2 1 2 3 4 6 9 8 12

13. Graphing Distance vs. Time
No Motion
Constant Speed
Increasing Speed

14. Example #5
Ex5: Every summer I drive to Michigan. It is 3900 km to get there. If I average 100 km/hr, how much time will I spend driving?

15. Example #6
Ex6: The pitcher’s mound in baseball is 80 m from the plate. It takes 4 seconds for a pitch to reach the plate. How fast is the pitch?

16. Example #7
Ex7: If you run a t 12 m/s for 15 minutes, how far will you go?

17. Example #8
Ex8: A bullet travels at 850 m/s. How long will it take a bullet to go 1000 m?