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# Force and Motion 2

TermDefinition
Constant speed When the speed of an object remains the same, it does not increase or decrease
Deceleration Something that causes an object to slow down.
Gravitational Force A force that attracts any object with mass.
Inertia A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
Newtons 1st Law of Motion An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Newtons 2ed Law of Motion The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
Newtons 3rd Law of Motion For every action, there is an equal and opposite reaction.
Relative Position A point defined with reference to another position, either fixed or moving; the coordinates of such a point are usually bearing, true or relative, and distance from an identified reference point.
Velocity the speed of something in a given direction.
Zero net Force When the object is not accelerating, then it is in a state that you call equilibrium.