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Chapter 15 Lesson 1

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Question
Answer
Name three ways something can move then give an example?   1) straight - a baseball player running from home to 1st base 2) curve - a car turning 3) back and forth - a guitar string  
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What does curved motion take place around?   a center point  
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What is back and forth motion known as?   vibration  
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What do you call the change in one object's position compared with another object's position?   relative motion  
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How can you tell things around you are moving?   they change position  
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How can you tell you are moving?   by passing a fixed object  
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What defines a person's frame of reference (point of view)?   objects that don't seem to move  
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What is the rate at which an object changes position?   speed  
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What is an example of a unit for speed?   miles per hour  
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What combines both the speed and the direction an object is moving?   velocity  
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What do you call any change in the speed or direction of an object's motion?   acceleration  
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Give three examples of acceleration.   starting, speeding up and slowing down  
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What happens as a roller coaster speeds up or goes around a curve even if its speed doesn't change?   it accelerates  
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