Learner's Activity 2 – Speed and distance time graph 1) Distance 300 200 10 20 30 Time The above distance-time graph shows the distance moved by a car over a period of time. a) What is the speed of the car in the first 10 seconds? b) What is the car doing from 10 to 20 seconds? c) What is the speed of the car from 20 to 30secs? Will you be able to tell without calculations if it is travelling faster or slower compared to speed in the first 20 seconds? d) What is the total distance travelled by the car? e) Given the average speed of the car for the whole journey is 12m/s, calculate the value of t. f) What is the car doing in the last few seconds?

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Use the following graph to answer 5.) these questions. 1.5 0.5 -0.5 -1 -1.5 -2 -2.5 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Time (s) A.) to t = 5 s? (5 m) How far does the car travel from t = 0 B.) How far does the car travel from t = 10 s to t = 12.5 s? С.) this graph. Draw a position -vs- time graph for Velocity (m/s)

Rate of Change/Slope Assessment Refer to the graph showing Dawn's trip to the store (measured in metres from home over time in minutes). Dawn's Trip To TheStore 1000 800 600 400 200 10 15 20 25 Time (min) 1. When is she moving fastest? Calculate her fastest speed (slope). 2. When did she stop? How does this appear on the distance time graph? 3. Which section of the graph has a negative slope/rate of change? What does it mean in this situation? 4. If the vertical axis label was changed to Distance traveled in metres (instead of distance from home) would this change the appearance of the last section of the graph? If so draw the new section on the graph. Distance from Home (m)