Distance - how far an object has moved (a scalar quantity).
Displacement - measures the distance and direction in a straight line (a vector quantity).
Vectors - have a magnitude and direction.
Scalar - only have magnitude and no direction.
Speed/Velocity - how fast an object is going (speed is a scalar, velocity is a vector).
Typical speeds for everyday objects:
|walking - 1.5 m/s||car - 25 m/s|
|running - 3 m/s||train - 55 m/s|
|cycling - 6 m/s||plane - 250 m/s|
Acceleration - how quickly you're speeding up.
Uniform Acceleration - constant acceleration.
Distance-Time Graph - if an object moves in a straight line, its distance travelled can be plotted on a distance-time graph.
Velocity-Time Graph - when a object's velocity changes it can be plotted in on a velocity-time graph.
Friction - slow things down. It always acts in the opposite direction to the movement.
Drag - Increases as speed increases.
Terminal Velocity - Maximum speed an object will fall at. Maximum speed depends on the shape and area of an object.