Motion
the action or process of moving or being moved.
Friction
the force that resists motion when the surface of one object comes in contact with the surface of another.
Static Friction
a force that keeps an object at rest.
Kinetic Friction
a force that acts between moving surfaces.
Liquid Friction
the force that resists motion either within the fluid itself or of another medium moving through the fluid.
Acceleration
increase in the rate or speed of something.
Newtons First Law of Motion
every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
Newtons Second Law of Motion
the acceleration of an object depends upon two variables – the net force acting on the object and the mass of the object.
Newtons Third Law of Motion
for every action in nature there is an equal and opposite reaction.
Gravity
the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
Pressure
continuous physical force exerted on or against an object by something in contact with it.
Buoyancy
the ability or tendency to float in water or air or some other fluid.