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Motion
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Reference Point
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Motion Unit Guide

Physical Science

QuestionAnswer
Motion An object is in motion when its distance from another object is changing.
Reference Point A place or object used for comparison to determine if something is in motion.
Internation System of Units (SI) Scientists all over the world use this system so that they can communicate clearly.
Meter The basic unit of length.
Speed A rate (usually rapid) at which something happens.
Avereage Speed The speed of most mooving objects is not constant. Because of this we can calculate average speed.
Instantaneous Speed
Velocity Speed in a given direction.
Slope The slant of a line on a graph.
Acceleration Cause to move faster.
How do you know if an object is moving? If it changes position relative to a(n) reference point.
Why is it important to know if your reference point is moving? So you can know if an object is in motion.
Suppose you are riding in a car. Describe your motion relative to the car, the road and the sun.
What is the SI unit for length? Meter.
How many centimeters are there in a meter? How many meters are there in a kilometer? 100 centimeter in a meter. 1,000 meters in a kilometer.
This week at swim practice, Jamie swam a total of 1500 m, while Ellie swam 1.6 km. Convert Ellie’s distance to meters. Which swimmer swam the greater distance? Ellie swam a greater distance.
What is speed? Rapidity of movement or action.
What do you know about the motion of an object that has an average speed of 1 m/s?
Created by: Avery Lamb
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