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Forces and Motion PS. 14-16
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Motion is a change in position Motion has direction like North, east, south, west, backward, forward, zigzag, circular, up or down Motion can be measured by its time Motion can be measured by its distance (with tools like a tape measure) and it is the length between two places Position is an object’s location compared to other things You need to know the distance and direction to identify position
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https://www.youtube.com/watch?v=xK mhS4qLj_s https://www.youtube.com/watch?v=xK mhS4qLj_s
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FIRST: Read pages 182 and 183 about Speed to yourself NEXT: Discuss what you read with your group to answer the questions on your guided notes sheet THEN: Share what you learned with the class AFTER that… TEST PREP
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Speed is how fast an object’s position changes over time Speed is distance divided by time (ex. 20 mi/hr) Speed is constant if the speedometer shows the same speed every time you look at it Speed is not always constant- it’s decreasing when you slow down, it’s increasing when you speed up Average speed is the total distance traveled divided by the total amount of time (it’s helpful when the speed of an object was changing) Constant speed is shown as a straight line on a distance-time graph The steepest line on a graph represents the fastest speed A curved line on a graph represents changing speed
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FIRST: Read pages 184 and 185 about Velocity to yourself NEXT: Discuss what you read with your group to answer the questions on your guided notes sheet THEN: Share what you learned with the class
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Velocity describes the speed and direction of an object Example: 80km/h west The arrows tell us about the direction and the speed. They point in a direction. If the arrow is longer, it represents a greater speed. If the arrow is shorter, it represents a lower speed. Velocity changes when the speed changes, or when the direction changes, or when both the speed and direction change. Velocity is constant when you travel in a straight line at a constant speed. The difference between speed and velocity is that velocity also tells a direction (speed only tells about distance and time).
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Classroom greeter- be ready Yesterday… Our objective was: I can describe velocity Your homework was to add information to the speed and velocity section of your foldable Today’s objective: I can describe acceleration Standard PS. 14-16 Guided notes on acceleration Foldable completion
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FIRST: Read pages 186-188 about Acceleration to yourself NEXT: Discuss what you read with your group to answer the questions on your guided notes sheet THEN: Share what you learned with the class
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