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Published byLillian Maxwell Modified over 6 years ago

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Motion Chapter 2

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Motion Distance ◦ How far an object has moved ◦ Total path Displacement ◦ Shortest path between 2 points ◦ Vector – requires magnitude and direction ◦ Can never be longer than the distance

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Speed Rate of change of position ◦ Change in position over time

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Velocity Rate of change of velocity Vector – requires speed and direction Changes if ◦ Speed changes ◦ Direction changes

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Calculating Velocity Units are m/s, km/h, cm/yr, etc.

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Acceleration Rate of change of velocity ◦ How fast does the velocity change Vector-requires magnitude and direction Changes if ◦ Velocity changes ◦ Direction changes

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Calculating Acceleration Units are m/s 2

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MOTION GRAPHS

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Position-Time Graph Shows how position changes with time Slope is equal to velocity

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Velocity-Time Graph Shows how velocity changes over time Slope is acceleration

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Motion and Forces Force ◦ Push or pull ◦ Causes or changes motion Balanced vs. Unbalanced forces ◦ Tug of war

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Tug of War

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Moving Furniture

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Inertia Tendency of object to resist a change in its motion Relationship to mass?

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Newton’s First Law of Motion Also called the Law of Inertia An object in motion will stay in motion and an object at rest will stay at rest until an unbalanced force acts on it.

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