Position-Time Graphs Velocity-Time Graphs

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# Position-Time Graphs Velocity-Time Graphs - PowerPoint PPT Presentation

Position-Time Graphs Velocity-Time Graphs. Using graphs to describe motion. The line. To begin, consider a car moving with a constant, rightward (+) velocity. Calculate the velocity of the car in the diagram below. (v = d / t) v= 10m/s. The Graph. A review: Axis The variables

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### Position-Time GraphsVelocity-Time Graphs

Using graphs to describe motion

The line
• To begin, consider a car moving with a constant, rightward (+) velocity.
• Calculate the velocity of the car in the diagram below. (v = d / t)
• v= 10m/s
The Graph
• A review:
• Axis
• The variables
• Point of Origin
The Slope of a P/T graph
• What does the slope signify?
• Slope = velocity
• What is the slope of this line?
What is going on here?
• What would happen if I had a horizontal line, what does that mean?
• What about a vertical line, what would that mean?
You should be able to do:
• The object is changing its position in the north direction from 0 to 3 seconds, the velocity is uniform.
• The object stays at the same position for about 3 seconds - its stopped for 3 seconds.
• From the 6th to the 8th second the object is backtracking, its returning to the starting position ( our reference point ).
• From the 8th second on the object passes the starting position and travels southward from it.
Acceleration
• Consider a car moving with a constant, rightward (+) velocity of +10 m/s.
• A car moving with a constant velocity is a car moving with zero acceleration
Velocity-Time Graph