1. AIM: How do we describe and graph motion and calculate speed and velocity? OBJ: Given notes and activity sheet SWBAT describe and graph motion and calculate speed and velocity with 70% accuracy DN: Distribute Motion, Forces, Energy Textbooks Watch video: ACT: Introduction to Motion, Speed/Velocity (notes) Text, read p.6-15, Work on Describing & Measuring Motion Packet Thursday HW: Study for Minerals & Rocks Exam, tomorrow, Friday, 3/20. Friday HW: Complete Describing & Measuring Motion Packet.

2. Describing & Measuring Motion Notes
Motion: if your distance from another object (place) is changing. Reference point: is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point.

3. Reference point

4. Describing & Measuring Motion Notes
Relative Motion: involves your aunts, uncles, cousins (lol; just kidding). Are you moving depends on your reference point? Reference point: your chair Moving? No Reference point: Sun Moving? Yes; moving very fast (30 km/s)

5. Relative Motion

6. Describing & Measuring Motion Notes
Measuring Distance Meter (m) = unit of length Centimenter (cm) = 1/100 meter Millimeter (mm) = 1/1000 meter Kilometer (km) = 1000 meters

7. 1 mile = 1.6 km
1 mile

8. Describing & Measuring Motion Notes
Calculating Speed Speed = distance (m) (km) (cm) time (s) (hr) (s) Average Speed: when moving objects are not constant (changing speed). To calculate Average Speed = total distance total time

9. Describing & Measuring Motion Notes
Describing Velocity
velocity = speed + direction
Graphing Motion
Slope = steepness of the line;
steeper = faster speed; gentle = slower
Horizontal line = object stopped
Constant slope = constant speed
Slope (speed) = distance
time
change in slope = change in speed.

10. Describing & Measuring Motion Notes
slow,
steady
speed
stopped