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

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Presentation transcript:

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

Measuring your Position Distance (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 = x f - x i Units:Meters (m) When are these quantities the same? When are these quantities different?

Practice What distance does Jimmy travel? What is Jimmy’s final displacement? 17m -3m

Distance Scalar magnitude, or just a number Displacement Vector magnitude and direction

Practice Total distance? Final displacement?

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

Total distance? Final displacement?

Pythagorean Theorem

Practice Jimmy 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= = 50m 12m 8m 5m 20m 5m = 24m D=

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! = yd

X t X t X t X t Basics Graphs

Graphing and Using data What does the slope mean? What does the y-intercept mean? Can I write an equation for this line?

Practice