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Aim: How do you construct a proper physics graph?

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Presentation on theme: "Aim: How do you construct a proper physics graph?"— Presentation transcript:

1 Aim: How do you construct a proper physics graph?
Graphing in Physics Aim: How do you construct a proper physics graph?

2 Typical Graphs Seen in Physics
Direct Relationship Constant Slope As x increases, y increases in a direct proportion

3 Typical Graphs Seen in Physics
Exponential Relationship Increasing Slope As x increases, y increases exponentially

4 Typical Graphs Seen in Physics
Inverse Relationship Decreasing Slope As x increases, y decreases

5 Graphing Steps ORAGNIZE your data in a table
Draw and label the AXES with APPROPRIATE UNITS & give your graph a TITLE Choose an appropriate scale for your axes that start from ZERO – NO BREAKS! Carefully PLOT your points DETERMINE the relationship… Does it look like a Direct/Exponential/Inverse relationship? Depending on the points, draw a BEST-FIT LINE or CURVE that starts from the origin If it’s a DIRECT relationship, CALCULATE the SLOPE of the line on the graph itself (WITH UNITS) If it looks like an Exponential relationship, DO NOT calculate the slope

6 Calculating the Slope of a Line
Choose two points on your BEST FIT LINE (BFL) NOT the actual DATA POINTS Make sure they are as FAR APART as possible Use the slope formula

7 Graphing Tips When asked to plot “This” vs. “That”…
“This” is on the y-Axis “That” is on the x-Axis NEVER connect the dots Use a ruler or straight edge when drawing a BFL

8 Distance(miles) Time (hr) 3.2 1 4.2 2 7 3 7.8 4 13 5 14 6 15.8 21.6 8 23.4 9 26 10

9 Distance(miles) Time (hr) 3.2 1 4.2 2 7 3 7.8 4 13 5 14 6 15.8 21.6 8 23.4 9 26 10

10 Distance (miles) Time (hr) 3.2 1 4.2 2 7 3 7.8 4 13 5 14 6 15.8 21.6 8 23.4 9 26 10

11 Distance(miles) Time (hr) 3.2 1 4.2 2 7 3 7.8 4 13 5 14 6 15.8 21.6 8 23.4 9 26 10

12 Distance(miles) Time (hr)
3.2 1 4.2 2 7 3 7.8 4 13 5 14 6 15.8 21.6 8 23.4 9 26 10 x2 = 8 y2 = 20 x1 = 2 y1 = 5

13 SUMMARY Describe the three types of graphs you will come across in physics What is the slope formula? List some things must you consider when calculating the slope of a BFL? What does it mean to graph “This” vs. “That”?

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