1. Motion and Newton’s Laws of Motion
In Chapter 4, Lessons Two through Four
Motion and Newton’s Laws of Motion

2. What is Motion? Lesson 2
Motion is the movement of a distance, d, in a time interval, t.
Sometimes it seems we aren’t moving, but we are moving relative to something like the sun or the earth.

3. Motion is relative
Standing still, we are not moving relative to a tree or building, but we are moving relative to the sun (with the Earth, as it moves around the sun).

4. Motion is relative, Lesson 2
So to define motion, we need to say we’re moving relative to something else that is not moving (our frame of reference).

5. Speed, Lesson 2
There are two parts to speed: time interval and the distance covered during that time interval.
Variations: instantaneous, average, and velocity.
Mostly we use average speed: = total distance covered time interval
Instantaneous: at one moment.

6. Speed vs velocity
Velocity means speed of an object combined with direction its going.
Speed uses distance/time while velocity uses displacement/time.
Example……

7. Vectors
Vectors are used to determine changes in velocity and new directions of objects.
Let’s calculate some car velocities using these type of vector problems.