Motion

Motion

• When an object changes place or position
• Dependent upon point of view
• Reference Point: Place/object used to determine motion

Describing motion

• start and end position
• what movement is relative to
• distance
• direction

Speed

• Rate
• Distance over time
• units: m/s, mph, km/hr
• NO direction

If you ran 2km in 10 min what is your speed?

What is the speed of a car traveling 144km in 90 min?

Constant Speed

• when speed doesn't change
• represented by a straight line on graph

Average Speed

• when speed fluctuates
• total distance divided by total time

Untitled Slide

Instantaneous Speed

• speed at any one given point in time

Untitled Slide

Velocity

• Speed with direction
• ex: 12 mph South