1. MOTION

2. Mechanics- the study of motion and its effects
Kinematics- description of the motion.(fast, slow, speeding up, straight, curved)
Dynamics- The cause and effect of the motion. (force, momentum, energy, power)

3. POINT OF REFERENCE- A stationary object to compare a moving object to.
DISTANCE- How far something travels (meters)
DISPLACEMENT- How far something is from its starting point (meters).
How far did the person walk?
What is their displacement? 2m

4. SCALAR VS. VECTOR SCALAR – has magnitude only (85mph, 50 ⁰c)
VECTOR- defined by magnitude and direction
( 23m/s north, 16ft southwest)
Magnitude is the numerical value

5. v = d/t unit: m/s SPEED – distance traveled over time.
speed = distance/time
VELOCITY- Change in displacement over time
average velocity = displacement/time
v = d/t
unit: m/s

6. A car travels east 10km in 30 minutes
A car travels east 10km in 30 minutes. They turn back and travel 3km west in 10 minutes.
What is the speed of the car in km/min and m/s?
speed = distance / time
speed = 13km/ 40 minutes
speed= .325km/min
speed = .325 km/min X 1000/60
speed = 5.42m/s

7. Same example
What is the average velocity of the car in km/min and m/s? velocity = displacement/ time v= 10km+ -3km = 7km / 40min 40min v= km/min v= 0.175km/min x 1000 /60 v= 2.92 m/s East

8. VELOCITY GRAPHS
d (m)
Not moving t

9. d
(m)
t (sec)
t(sec)
Constant Velocity, Direct proportion
Constant velocity
Decreasing distance
Inverse Proportion

10. constant acceleration, direct square proportion
d (m)
Instantaneous speed
t(sec)
Increasing velocity,
constant acceleration,
direct square proportion