Position and MotionSection 1.1

Position

Position: location of a place or object

Position is described using comparison to another location.

Reference point: location to which you compare other locations.

Latitude and longitude are a standard system to describe location

Latitude- degrees North and South of Equator

Longitude- degrees East and West of Prime Meridian

Measuring Distance

Meters (m) are the standard scientific unit of measurement for length

Measuring distance depends on the information you want Straight line tells distance between 2 points

Length of path tells distance of travelled route

Motion

Motion: change in position over time

Horizontal: across

Vertical: up and down

Speed: described how quickly an object changes position

Good descriptions of motion include information on speed.

Relative Motion

How motion is observed depends on the position and motion of the observer.

Frame of reference: location of observer when comparing motion Ground is typically used as frame of reference

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