# Motion and Force A. Motion 1. Motion is a change in position

## Presentation on theme: "Motion and Force A. Motion 1. Motion is a change in position"— Presentation transcript:

Motion and Force A. Motion 1. Motion is a change in position 2. Reference points are necessary

B. Speed 1. The rate of change in position 2. Types of speed: a. Instantaneous b. Constant c. Average 3. Speed = Distance / Time

5. Displacement vs. distance
a. Distance – how far something moves b. Displacement – the distance and direction of an object’s change in position from its starting point

C. Velocity 1. Speed in a defined direction 2. Velocity can change even if speed is constant as long as direction changes

D. Acceleration 1. The rate of change of velocity 2. a = (vf – vi) / t or a =  v / t 3. Units are m/s/s 4. +a = speeding up; -a = slowing down

Example: constant speed & acceleration

Graphing Acceleration

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