1. 1 Lesson 1: Physics 150 / 215 Describing Motion Basic Terms & Units of measurement –distance & displacement –speed & velocity –acceleration Analyzing Motion –diagrams –graphs –equations Problem Solving

2. 2 Distance & Displacement Distance –Total distance traveled –measured in Standard International (SI) units meters –This is a scalar quantity and is always positive Displacement –Straight line pointing from start of motion to the ending point –This is a vector quantity

3. 3 Vector Properties Vector quantities: 2 properties –magnitude the size of the vector it is always a positive number –direction In 2D or more this involves angles and +/- signs in 1D this only involves +/- signs.

4. 4 Angles Angles and Simple Trig. r s  SI units are RADIANS

5. 5 Basic Trig. Trig:  c a b

6. 6 Speed –Average total distance traveled divided by total time taken –Instantaneous rate at which the distance traveled is changing with time in the direction of motion (always +ve)

7. 7 Velocity & Speed –Average total displacement divided by total time taken –Instantaneous rate at which the displacement is changing with time. –Instantaneous speed magnitude of instantaneous velocity (always +ve) Velocity & Speed

8. 8 SI units

9. 9 Acceleration –Average change of velocity divided by time taken for change –Instantaneous rate at which the velocity is changing with time. –Scalar acceleration magnitude of instantaneous acceleration (always +ve) Acceleration

10. 10 SI units

11. 11 Functional Notation

12. 12 Kinetic Equations of Motion