Physics Graph Matching

Acitivity #2 Chris TurnbullExperiment #1 Andrea Alonso4 September 2013 Tyler Schott

“Graph Matching”

Walking in positive direction with constant speed

Prediction of Graph when walking faster



Trial of walking faster in positive direction graphed against prediction line.



PART 2

To produce this target graph we would have to stand still for 1 secoond then begin to walk at a constant speed in the positive direction starting at 1 meter and ending at aprox 2.5 meters. Then stop for approximatly 3 seconds. Then walk in the negative direction at a constant speed back to aprox. 1.75 meters. Then we stand still again.


“Graph Matching”01c GRAPH MATCHING

Start at 3 meters walking in the negative direction for 3 seconds stopping at 1.5 meters. Stand still for 1 second then walk in the negative direction 1 meter in 1 second. Stand still for 2 seconds then walk in the positive direction at a constant speed for 3 seconds traveling 2.5 meters.


“Graph Matching”01D GRAPH MATCHING

To match this graph we must stand still for 2 seconds then begin walking in the positive direction for 3 seconds traveling 1.5 meters. Then we stop walking and stand still for 2 seconds. Then begin walking in the negative direction for 3 seconds traveling 1.5 meters.


“Graph Matching”01e GRAPH MATCHING

To match this graph, accelerate slowly to .5 m/s, then continue at that constant speed for 2 seconds. Then walk in the negative direction to .4 m/s, continue this speed for 3 seconds.


“Graph Matching”Analysis

Part II Position vs. Time Graph Matching

1. Describe how you walked for each of the graphs that you matched.

To produce the 01b target graph we stood still for 1 second then begin to walk at a constant speed in the positive direction starting at 1 meter and ending at approx 2.5 meters. Then stopped for approximately 3 seconds. Then we walked in the negative direction at a constant speed back to approx. 1.75 meters. Then we stood still again.

For 01c we started at 3 meters walking in the negative direction for 3 seconds stopped at 1.5 meters. Stood still for 1 second then walked in the negative direction 1 meter in 1 second. Stood still for 2 seconds then walked in the positive direction at a constant speed for 3 seconds traveling 2.5 meters.

2. Explain the significance of the slope of a position vs. time graph. Include a discussion of positive and negative slope.

The slope is significant because it shows the velocity of the object. A positive slope means that the object is getting farther away from the sonic ranger. A negative slope means that the object is getting closer to the sonic ranger.

3. What type of motion is occurring when the slope of a position vs. time graph is zero.

When the slope of the position vs. time graph is zero, the object is at rest?

4. What type of motion is occurring when the slope of position vs. time graph is constant?

When the slope is constant, the object is moving at a constant velocity.

5. What type of motion is occurring when the slope of a position vs. time is changing?

When the slope of the position vs. time is changing, the object's velocity is changing.

Part III Velocity vs. Time Graph Matching

7. Describe how you walked for each of the graphs that you matched.

To match the 01d graph we stood still for 2 seconds then began walking in the positive direction for 3 seconds, traveling 1.5 meters. Then we stopped walking and stood still for 2 seconds. Then began walking in the negative direction for 3 seconds, traveling 1.5 meters.


“Graph Matching”To match the 01e graph, we accelerated slowly to .5 m/s, then continued at that constant speed for 2 seconds. Then walked in the negative direction to .4 m/s, then continued at this speed for 3 seconds.

8. What type of motion is occurring when the slope of a velocity vs. time graph is zero?

When the slope of the velocity vs. time graph is zero, the object is moving at a constant velocity.

9. What type of motion is occurring when the slope of a velocity graph is not zero?

When the slope of the velocity vs. time graph is not zero, the object is under acceleration.

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Physics Graph Matching