Motion…Speed… Velocity…Acceleration

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

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

Speed 4. Constant speed - speed that does not change

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

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

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

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

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

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

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

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

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