Motion Change in position during a time period 3 types of motion –Speed –Velocity –Acceleration
Speed 1. Definition: Rate at which an object moves 2. Formula: Distance divided by time (d/t) 3. Units: m/s or km/s
Speed 4. Constant speed - speed that doesn’t change 5. Average speed- add speeds, divide by total number
Velocity 1. Definition: Describes speed plus direction (n, s, e, w) 2. Formula: D/T plus direction 3. Units: m/s or km/s, north, south, east or west
Velocity 4. Velocities can be combined –Add velocities when in same direction –Velocities in opposite direction= subtract
Accelerati on 1. Definition: Rate of change in velocity –Speeding up, slowing down, changing direction 2. Formula: Final velocity minus original velocity, divided by time 3. Units: m/s/s or km/s/s
Accelerati on 4. Increasing velocity - positive acceleration 5. Decreasing velocity - negative acceleration- deceleration
Momentu m 1. Definition: Depends on object’s mass and velocity –Related to force upon impact 2. Formula: Mass x velocity 3. Units: Kg.m/s