1. Motion, Speed, and Velocity

2. Motion Requires Energy
An object in motion has kinetic energy, but and object at rest(not in motion) has potential energy(stored energy).
The faster an object is moving the more Kinetic energy it has!!!

3. Change in position of an object relative to a reference point.
Position:-location of an object. For example the watch is on the dresser. The dresser is the location.
Motion:
Change in position of an object relative to a reference point.
Reference point: point to which the other object is being compared.
For example, in a race, my fixed point or reference point is the starting line. I move away from it toward the finish line. There is a change in distance between the starting line and me.

4. Motion—part 1
When an object changes its position, motion has occurred.
Distance- How far an object has moved.
Total Path Measurement
Displacement- How far an object has moved in relation to its starting point.
Straight line measurement from Start to finish

5. Distance vs Displacement
Distance: total path AB + B C 4km +3km= 7km distance traveled Displacement: straight line distance from start to finish. A to C= 5km Distance was more than displacement

6. Can displacement be zero?
Yes, if the bike travels all the way back home.
Then displacement would be zero, because there is no distance between the starting position and the ending position.

7. SPEED - is the rate of motion, or the rate of change of position;
a measurement of distance traveled over time
calculated by dividing the distance traveled by the time taken S= D/t
VELOCITY - measurement of the rate and direction of motion 15m/s west
an object's speed and direction of motion
- calculated by dividing distance by time and reporting a direction V=D/t in a direction d= displacement

8. 3 Terms to Know about Speed
Constant Speed- speed does not change over time(remains constant)
Average Speed- speed of motion when speed is changing throughout distance traveled
Avg Speed = Total Distance/ Total Time
Instantaneous Speed- speed at any given moment in time (speedometer)

9. Calculating Speed Given Distance & Time