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• 1. Test Review Page 296  Definitions of quantities Pg. 320- 323  Question 2 (329) Pg. 354 – 356  Question 3 (358)
• 2.
• Slope = y / x
• Slope = distance / time
Average Speed = m/s Distance vs. Time graphs
• 3. Distance vs. Time graphs A car’s Motion
• 4.
• 5.
• During which interval is the cars average speed the greatest?
• 0-2 s
• 2-4 s
• 4-6 s
• 6-8 s
How can you tell?
• 6.
• 2. Calculate the average speed of the car from 4s to 6s ?
• 3. Use the graph and describe the cars motion during the trip
• 7. Questions about Average Speed
• Sarah backstrokes at an average speed of 8 m/s , how long will it take her to complete 200 m race?
• Laurens SUV was found speeding at a 60 km/hr zone. How many km/hr is she travelling over the speed limit if she covered a distance of 10km in 5 minutes?
• 8. Distance Vs. Time Graph
• 9. Position vs. Time graphs
• Slope = y / x
Av . Velocity= d (change in pos)/ t =m/s (direction)
• 10. Direction!
• 11.
• During which time intervals is the object stationary?
• 0-2 s
• 4-6s
• 6-8 s
• 8-10s
How do you know quantitavely?
• 12.
• 2. What is the average velocity of the car between 8 s and 10 s?
• 3. When is the cars average velocity the greatest?
• 4. Using the graph, describe the cars overall average velocity during its trip
• 13. Write a description about the motion that graphs might describe
• 14. Velocity Questions
• A student walks 2.5 km (E) and then 5.9 km ( S) in 2 hr. Calculate the average velocity
• 2. A dog runs 1.3 m (N) and turns around and runs 4 m (S) in 20 min. What is the dogs average velocity?
• 15. Acceleration = a
•   Accel.= change in velocity / change in time
• a = v / t
• (How fast you change how fast you are going!)
• Vector = Magnitude (size) + Direction
•   Units: m/s 2
• 16. Sample Problem
• A train starts from rest, and accelerates to a final velocity of 500 m/s (E) in a time of 180 s. Calculate the trains acceleration
• 17. A car travelling at a velocity of 30 m/s (S) encounters an emergency and comes to a stop. How much time will it take for the car to stop if it decelerates at –4.0 m/s 2