1. Kinematics Displacement – Time Graphs & Velocity

2. Recall: Velocity is the displacement of an object over time We can represent velocity by graphing….

3. Displacement – Time Graphs: The slope of a displacement/position – time graph gives velocity A straight line represents uniform motion t (s) (m)

4. Which of the three runners is running the fastest? Runner B has the fastest velocity

5. When would runner B & C have the same position? Where would runner A be at this time?

6. A) What is the dog’s position at 4s? B) What is the dog’s displacement btw 2 & 5s? C) What is the velocity of the dog? The position-time graph represents the motion of a dog running. At 2s dog at 2m At 5s dog at 5m A) 4m B) 3m C) 1m/s

7. 160km [N] 80km/h [N] 0.5h A car starts at marker 40km[S] then stops at marker 120km[N]. A)Displacement? B)Velocity? C)When is car at marker 0km?

8. A train leaves Toronto for Montreal, 550km away, averaging a speed of 90km/h. Another train leaves Montreal for Toronto averaging a speed of 160km/h. When will the two trains meet? TO Mtl

9. Non-Uniform displacement-time graphs show objects traveling at different velocities t (s) d (m) Fastest velocity yet constant At rest Constant velocity Negative velocity OR traveling backwards

10. The graph shows the motion of a jogger. a)When was jogger running fastest? b)What was the farthest point reached by the jogger? c)When did the jogger rest? d)What was the jogger’s displacement at: i)0 – 200sii)300 – 500s iii)0 – 500s e)What was the total distance traveled?

11. A) Section A B) 750m C) Section C D) i.750m ii. -750m iii. 0m F) 1500m