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Describing and measuring motion (describing motion (reference point (an…
Describing and measuring motion
describing motion
a object is in motion if its distance from another object is changing because your distance from your chair is not changing you are not motion
reference point
an object is in motion of it changes position relative to reference point
relative motion
when your chair is your reference point you are not moving but if you choose another reference point you may be moving
measuring distance
when describing motion scientists use SI units to describe the distance an object moves
calculating speed
if you know the distance an object travels in a certain amount of time you can calculate the speed the speed of the object
the speed equation
to calculate the speed of an object divide the distance the object travels by the amount of time it takes ti travel that distance
average speed
divide the total distance traveled by the total time
istantaneous speed
the rate at which an object is moving at a given time
describing velocity
if you know the distance an object travels in a certain amount of time you can calculate the spped of the object
graphing motion
you can show the motion of an object on a line graph in which you plot distance versus time
calculating slopes
calculate the slope of a line by the dividing run the rise is the vertical difference between any two points on the line
different slopes
the slope of each segment is different from the steepness of the slopes you can tell that jogger ran the fastest during the third segment