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One Dimensional Motion

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Page 1: What is the most basic way to describe an object’s motion? Position A description of an object’s location

One Dimensional Motion

What is the most basic way to describe an object’s motion?

PositionA description of an

object’s location

Measuring your PositionDistance (d)The number of steps

you take … How far did you go?

Displacement (D)How far are you

from where you started?

(Straight line distance)

• D = xf - xi

Units: Meters (m)

When are these quantities the

same?

When are these quantities different?

Page 4: What is the most basic way to describe an object’s motion? Position A description of an object’s location

Practice What distance does Jimmy travel?

What is Jimmy’s final displacement?

17m

-3m

Page 5: What is the most basic way to describe an object’s motion? Position A description of an object’s location

Distance

Scalarmagnitude, or just a

number

Displacement

Vectormagnitude and

direction

Page 6: What is the most basic way to describe an object’s motion? Position A description of an object’s location

Practice

Total distance? Final displacement?

Page 7: What is the most basic way to describe an object’s motion? Position A description of an object’s location

If an ant goes around the circle 3 times, what is your total distance and final

displacement?

Page 8: What is the most basic way to describe an object’s motion? Position A description of an object’s location

Total distance? Final displacement?

Page 9: What is the most basic way to describe an object’s motion? Position A description of an object’s location

Pythagorean Theorem

Page 10: What is the most basic way to describe an object’s motion? Position A description of an object’s location

PracticeJimmy was lost in a field, he found a bottle labeled

“drink me” and then proceeded to stager around the field following this pattern: he travel 12m north, 8 m south, 5m east, 20m north, and finally 5m west. What distance did he travel?What was his final displacement?

d= 12+8+5+20+5=•50m

12m

20m

= 24m

Page 11: What is the most basic way to describe an object’s motion? Position A description of an object’s location

Page 12: What is the most basic way to describe an object’s motion? Position A description of an object’s location

First: combine all the up and down vectors

We need to build a triangle we can work with!!

Second: combine all the left and right vectors

Now build your triangle and put the Pythagorean Theorem to good use!

=65

65.76yd

Page 13: What is the most basic way to describe an object’s motion? Position A description of an object’s location

Basics Graphs

Page 14: What is the most basic way to describe an object’s motion? Position A description of an object’s location

Graphing and Using data

What does the slope mean?

What does the y-intercept mean?

Can I write an equation for this line?

Page 15: What is the most basic way to describe an object’s motion? Position A description of an object’s location

Practice

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