# Name That Motion

 Materials: Computer and School Network Time Allotment: 3 Class Days

### Purpose:

The purpose of this lab is to use an understanding of the concepts of speed, velocity, and acceleration to describe the motion of an object by matching the simulations of 12 different motions with the appropriate verbal description.

### Procedure:

To begin this lab:

1. Log on to the student server in the usual manner
2. Open the Multimedia folder; then open the Hypercard application.
3. Once the Hypercard is opened, chose Open... from the File menu.
4. A directory dialogue box should appear. Navigate through the Physics Stacks directory and find the file titled Name That Motion; open this stack by double-clicking on its icon.
5. Click anywhere on the first card in order to navigate to the simulation card.

Running the Simulations:

At the bottom of the monitor are twelve buttons which correspond to the twelve simulations that you will observe. Clicking on one of these buttons will cause the car to move. As the simulation runs, the car will leave a trail of dots to mark its position at regular time intervals - say, every second. An analysis of these dots will be essential in describing the motion of the object. Your task involves running the simulation, observing the motion of the car, analyzing the trace of dots left by the car, and matching the motion with a verbal description given on the Data Sheet below. Note that a few of the simulations request that you draw the trace of dots left by the car; the trace needs to be drawn only for those simulations which are requested. Once you have matched the motion in simulation #1 with one of the verbal descriptions, click on the #2 button. Repeat this procedure for all 12 simulations.

### Simulation #

1. The car moves with a rightward velocity and speeds up.

DRAW TRACE:

_____________

2. The car moves with a constant velocity. Then the car remains at rest for several seconds. Finally, the car moves in the opposite direction with an acceleration.

_____________

3. The car moves with a constant leftward velocity.

DRAW TRACE:

_____________

4. The car moves with a negative velocity. Then the car remains at rest for several seconds. Finally, the car moves with a low constant speed.

_____________

5. The car moves with constant speed to the right.

DRAW TRACE:

_____________

6. The car moves with a rightward velocity. Then the car instantly stops and remains at rest for several seconds. Finally, the car moves in the opposite direction while speeding up.

_____________

7. The car accelerates from rest to a high speed. Then the car instantly stops and remains at rest for several seconds. Finally, the car moves in the opposite direction with a high constant speed.

_____________

8. The car moves to the right and slows down.

DRAW TRACE:

_____________

9. The car moves with a leftward velocity while speeding up.

DRAW TRACE:

_____________

10. The car moves with a constant leftward velocity. Then the car continues in the same direction with a larger speed than before.

_____________

11. The car moves with a leftward velocity while slowing down.

DRAW TRACE:

_____________

12. The car moves slowly with a constant speed. Then the car moves fast with a constant speed.

_____________

### Conclusion:

Use several well-written and complete sentences to summarize what needs to be known in order to match the observed motion (or merely the trail of dots left by the moving object) with the appropriate verbal description. Do a bang-up job!