1. IPS Terminal Velocity Expedition 2: A Universe of Motion

2.  Discover how motion is relative to a standard reference point.  Distinguish between scalar and vector quantities of motion.  Explore the motion of an object by describing its position, direction, and speed.  Create and interpret a variety of motion graphs.  Discover how distance/displacement, speed/velocity, acceleration, and momentum are all connected by the rate of change.  Apply the Law of Conservation of Momentum to analyze crash tests performed at the Insurance Institute for Highway Safety (IIHS).

3. Terminal Velocity Expedition 2:A Universe of Motion Stage 1: On the Move A reference point is the location from which motion is studied.reference point

4. Stage 1: On the Move Motion can be measured in two ways, distance and displacement. distancedisplacement

5. Stage 1: On the Move Distance measures how far apart two objects are from one another Distance is a scalar quantity

6. Stage 1: On the Move Distance is a scalar quantity because it only describes the magnitude, or amount of a measurement.

7. Stage 1: On the Move Scalar quantities are those that only have magnitude. Scalar

8. Stage 1: On the Move Some measurements have two characteristics: magnitude and direction. These are called vector quantities. vector

9. Stage 1: On the Move Vector arrows are arrows that represent both the magnitude and the direction of motion.

10. Stage 1: On the Move DisplacementDisplacement measures the numerical difference between the end (final) position and start (initial) position of an object, as well as the direction that the object traveled.

11. Stage 1: On the Move RateRate is the amount of change in any measurement over time

12. Stage 1: On the Move

13. Speed is the distance traveled over a given period of time. Instantaneous speed is the speed of an object at an exact moment in time.

15. Stage 1: On the Move Calculating Speed Average Speed is the total distance traveled divided by the elapsed time

16. Calculating Speed (Average speed = total distance/total time)

17. Calculating Speed Graphing Speed Time is plotted on the x-axis and distance is plotted on the y- axis.

18. The slopeof the line on a graph of distance vs time indicates how fast the object is going

19. Graphing Speed Slope = rise/run

20. Graphing Speed Slope = rise/run

21. Stage 1: On the Move Speed is an example of a scalar quantity. It only shows "how fast" the car is traveling, and does not show in which direction the car is traveling.

22. Velocity- A vector quantity

24. Stage 1: On the Move Velocity- is a is a vector quantity

25. Stage 1: On the Move Velocity is a vector quantity which represents both the speed and the direction in which an object is moving.

27. Acceleration describes these changes in speed and direction. Acceleration

28. When the velocity of a moving object decreases, it is said to decelerate, or undergo negative acceleration.decelerate

30. Acceleration describes changes in direction as well as those in speed. Starting acceleration is zero. The time during which it moved is plotted horizontally on the x-axis. Its velocity is plotted vertically on the y-axis. The slope of the line illustrates whether the object is speeding up or slowing down.

32. So far we have explored linear motion, or motion in a line or in one dimension.linear motion

33. _________________ is an object’s mass multiplied by its velocity. _________________

34. If the velocities of two objects are the same, the object with more mass will have more momentum.

35. If the masses of two objects are the same, the object with a higher velocity will have more momentum.

36. ___________________ is an object’s resistance to change in its state of motion. ___________________

38. The law of conservation of momentum tells us that momentum is neither lost nor gained, but rather is transferred between objects.law of conservation of momentum