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# Force and motion

TermDefinition
Position Location of an object
Motion An objects change of position relative to a reference point
Reference point A place or object to which another location is compared
Displacement The distance of a straight line from the starting point to the ending point
Speed The measure of how quickly an object moves over time Distance/Time
Average speed Total distance traveled divided by the total time of travel
Instantaneous speed The speed of an object at a specific moment in time
Velocity An object's speed combined with its direction of motion
Vector A physical quantity of size and direction
Acceleration The measure of of how quickly velocity changes
Inertia A tendency to do nothing or to remain unchanged.
Friction The resistance that one surface or object encounters when moving over another.
Newton's First Law 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.
Force Strength or energy as an attribute of physical action or movement.
Newton's Second Law The acceleration of an object depends on the mass of an object and the net force applied F=ma
Net Force The combonation of all the forces acting upon an object
Balanced Force A set of forces that cancel each other so there is no overall force being applied
Unbalanced Force A set of forces that do not cancel each other. This results in motion.
Potential Energy The energy of position
Kinetic Energy The energy of motion
Newton's Third Law For every action there is an equal and opposite reaction of the force applied
Created by: 233606