1. Science Starter! Complete the worksheet “Science Starter!” (on teacher’s desk).

2. Analyzing “x vs. t” graphs 1. What is the total distance traveled by the object from t= 0s to t = 30 s? (A) 30 m (B) 0 mTOTAL = 50 m (C) 20 m 2. What is the displacement of the object from t= 0s to t = 30 s? t = 0s: object is at 0 m t = 30s: object is at 10 m Δ x = x – x o Δ x = 10 – 0 = + 10 m

3. Average Speed On the graph shown, determine the average speed from t = 0s to t = 30s.

4. Average Velocity On the graph shown, determine the average velocity from t = 0s to t = 30s.

5. Average Velocity (Slope Method) On the graph shown, determine the average velocity from t = 0s to t = 30s. 2. Find the slope of this line: (10 – 0) m = + 0.33 m/s (30 – 0) s 1.Draw a line connecting the two points.

6. 1.Describe the motion depicted in this particle model. 2.Create a data chart and graph the motion shown. Time (s) Distance (m) 00 12.5 27.5 317.5 432.5 555

7. Acceleration Rate at which the velocity of an object changes. Vector Symbol: “a” Unit: m/s 2

8. Key Ideas to Remember On a “Position vs. Time” graph: ∙ Linear Line: Constant Velocity - Positive Slope: Moving in (+) Direction (forward) - Negative Slope: Moving in (-) Direction (backward) - Zero Slope: Not Moving (stopped) * Speed: Distance / Time * Velocity: Displacement / Time - Average Velocity: Slope between any two points - Must include either (+) or (-) ∙ Curved Line: Acceleration