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Published byAlfred Melton Modified over 5 years ago

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Motion Graphs Distance vs. Time Graphs

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Motion Graphs Show the motion of an object in a graph. Graphs can help make motion easier to picture and understand

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Distance-Time Graphs Time is always on the X-axis (bottom of the graph) Distance is always on the Y-axis (side of the graph)

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Objects Not Moving/At Rest When an object is NOT moving, a horizontal line is shown on a distance-time graph Time is increasing to the right but the distance does not change.

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Objects moving at a Constant Speed Time is increasing to the right and distance is increasing constantly with time. Constant speed is shown by straight lines on a graph.

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Two objects moving at a constant speed The steeper line shows an object moving at a greater speed. It is covering a greater distance in a shorter period of time. Both lines are straight so both speeds are constant.

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An Object Accelerating A curved line shows an object that is accelerating In this case the object shows in increase in speed since the line is getting steeper.

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What is the motion of the object in the graph below?

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No motion Moving away fast at a constant speed Stopped (no motion) Moving away more slowly at a constant speed Stopped (no motion)

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What is the motion of the object in the graph below?

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Moving away at a constant speed Stopped moving (no motion) Accelerating

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Distance Time Graphs Review

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Practice Reading a Graph What is the motion of the object in the graph? –Constant Speed –The line is straight so the object is moving at a constant speed.

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What is the Speed of the object? Speed = distance ÷ time 5 meters in 1 sec. 25 meters in 5 sec. 50 meters in 10 sec. 5 ÷ 1 = 5 m/s 25 ÷ 5 = 5 m/s 50 ÷ 10 = 5 m/s This object is travelling at a constant speed of 5 m/s (meters per second)

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Interpret the graph below Which car is traveling the fastest? –Car D Which car is traveling the slowest? –Car A Which car is traveling at a speed of 30 Km/h? –Car C

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