Kinematic Graphs. 3 graphs - same movement 1.What types of graphs are present in each line? 2.Each row is labeled with a different type of movement. In.

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Presentation transcript:

Kinematic Graphs

3 graphs - same movement 1.What types of graphs are present in each line? 2.Each row is labeled with a different type of movement. In your own words describe each type of movement (ex. – what is stationary) 3.Why do 3 graphs of the same motion look different?

Essential elements of kinematic graphs Quadrant – the area of the Cartesian plane that the graph is located in. Point – any point on the graph line Slope – the amount of slope for each line segment on the graph Area under the graph – the area between the x-axis and the graph line

The position v. time graph Quadrant – position relative to the starting point. In QI the object is in the positive direction from the starting point. Point on the graph – position at that particular instant in time. Slope – velocity (speed) of the object Area under the graph – tells nothing of value

2 questions about the position v. time graph 1.What is the velocity (speed and direction of movement) of the object at 35 s? 2.Where is the object located at 20 s? Is this in front of or behind the starting position? What about at 40 s?

The velocity v. time graph Quadrant – the direction of the objects movement (ex. – in QI the object is moving in the + direction) Point – each point represents the object’s velocity at that instant in time Slope – the slope represents the magnitude and direction of the object’s acceleration Area under the graph – represents the object’s position at that instant in time

5 questions about the velocity v. time graph 1.What is the object’s speed at 2 s? At 4 s? 2.What is the object’s acceleration from 2 – 3 s? 3.What is the object’s acceleration from 0 – 2 s? Is it speeding up or slowing down? What is it’s direction? 4.What is the object’s acceleration from 4 – 5 s? Is it speeding up or slowing down? What is it’s direction? 5.What is the object’s displacement at 3 s?

The acceleration v. time graph Quadrant – the direction of the object’s acceleration (ex. In QI the acceleration is positive) Point – the acceleration of the object at that particular instant in time. Slope – the change in acceleration over time Area under the graph – the velocity of the object

3 questions about the acceleration v. time graph 1.When is the object not accelerating? 2.What is the acceleration of the object at 15 s? Is it speeding up or slowing down? 3.What is the object’s speed at 9 s?