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Motion, Acceleration, and Forces (chapter 3) Motion occurs as something changes position ◦ Relative motion appears according to your position ◦ Distance.

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Presentation on theme: "Motion, Acceleration, and Forces (chapter 3) Motion occurs as something changes position ◦ Relative motion appears according to your position ◦ Distance."— Presentation transcript:

1 Motion, Acceleration, and Forces (chapter 3) Motion occurs as something changes position ◦ Relative motion appears according to your position ◦ Distance is how far an object moves ◦ Displacement if the distance and direction an object changes  This is known as a vector

2 Speed vs. velocity Speed – the distance traveled per unit time (m/s) Instantaneous speed – speed at a given point in time Average speed = total distance/total time Velocity – the speed and direction of an object

3 Graphing motion

4 Let’s change things up…

5 Acceleration – an objects change in velocity Very unique label (ex. m/s 2 ) Negative acc = deceleration Acceleration = (final velocity – initial velocity) (final time – initial time)

6 Let’s look at a speed-time graph

7 Motion and Force Force is a push or pull on an object Balance forces – equal in size; opposite in direction ◦ No motion!

8 Unbalanced forces result in motion!

9 Friction – a force that opposes motion Static friction – the force to get something to move Sliding friction – the force that keeps something moving Rolling friction > sliding friction

10 Air resistance opposes motion through the air

11 Terminal velocity


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