Picturing Motion Section 3.1 Physics

Objectives Draw and use motion diagrams to describe motion. Use a particle model to represent a moving object.

Motion Diagrams Used to study motion. Like a frame in an old movie. All the frames are stacked on top of each other. Def: A series of images of a moving object that records its position after equal time intervals.

Operational Definitions Speeding up Slowing down At rest Constant speed

Examples of Motion Diagrams Pg 45 in your textbooks

The Particle Model Exactly the same as a motion diagram. Instead of a person or picture series, you just use a dot (particle) to represent the object moving.

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Questions pg. 46

Questions Use the particle model to draw a motion diagram for a runner moving at a constant speed. Use the particle model to draw a motion diagram for a runner starting at rest and speeding up. Use the particle model to draw a motion diagram for a car that starts from rest, speeds up to a constant speed, and then slows to a stop.

The End