1. Motion…Speed… Velocity…Acceleration

2. Motion 1. Change in position during a time period
2. Determined by Reference Point
“You are Here”
3. 3 types of motion
Speed
Velocity
Acceleration

3. Speed Equation S=D/T 1. Definition: Rate at which an object moves
2. Formula: Distance divided by
time
3. Units: m/s or km/s

4. Speed
4. Constant speed - speed that does not change

5. Speed
5. Instantaneous speed - speed of an object at a particular moment in time
6. Average speed- add speeds, divide by total number

6. Speed 6. Graphs: Time: x-axis Distance: y-axis Constant speed
Changing speed

7. Velocity Equation D/T Plus Direction
1. Definition: Describes speed plus direction (n, s, e, w)
2. Formula: Distance divided by time PLUS direction
3. Units: m/s or km/s, north, south, east or west

8. Velocity 4. Velocities can be combined
velocities in same direction = Add
Velocities in opposite direction= Subtract

9. Velocity 5. Graphs: Time: x-axis Distance: y-axis
(same as speed graphs but also has direction)

10. Acceleration 1. Definition: Rate of change in velocity
Speeding up, slowing down, changing direction
2. Units: m/s/s or km/s/s

11. Acceleration 3. Increasing velocity - positive acceleration
4. Decreasing velocity - negative
acceleration- deceleration

12. Acceleration 6. Graphs X- axis- time Y-axis- velocity
Constant acceleration
Changing acceleration

13. Momentum Equation mom=m x v 1. Definition: Depends on object’s
mass and velocity
Related to force upon impact
2. Formula: Mass x velocity
3. Units: kg x m/s