Velocity - How fast something is moving in a certain direction.
Speed - Distance travelled in a certain time. Usually in m/s.
Acceleration - How quickly the velocity is changing. This change in velocity can be a change in speed or a change in direction or both.
Weight - Force on an object due to the force of gravity on a planet.
Mass - Amount of matter in an object. Measured in kilograms (Kg).
Resultant Force - Single force that would have the same overall effect of all the forces on an object combined.
Force - Push or pull that changes the way an object is moving, or its shape. Measured in newtons (N).
Terminal Velocity - Maximum velocity of an object when the forces on it are balanced. Usually applied to objects falling under gravity.
Stopping Distance - Sum of thinking distance and breaking distance.
Work Done - Energy transferred, measured in joules (J). Work done is equal to force applied x distance moved in the direction of the force.
Kinetic Energy - Energy due to the movement of an object.
Power - Work done (or energy transferred) in a given time. Measured in watts (W).
Momentum - Mass of an object x velocity (v).