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Position & motion

TermDefinition
REFERENCE POINT the starting point you choose to describe the location, or position, of an object.
POSITION an object's distance and direction from a reference point.
MOTION the process of changing positions.
DISPLACEMENT the difference between the initial or starting position, and the final position.
SPEED a measure of the distance an object travels in a given amount of time.
VELOCITY the speed and direction of an moving object.
VECTOR a quantity that has both magnitude and direction.
ACCELERATION a measure of the change in velocity during a period of time.
FORCE a push or pull on an object.
CONTACT FORCE a push or pull on one object by another object that is touching it.
NEWTON'S 2ND LAW acceleration of an object's equals the net force divided by the objects mass.
FRICTION a force that resists the sliding motion of two surfaces that are touching.
FREE-BODY DIAGRAM a simple model to understand systems of objects with any amount of applied forces.
NET FORCE the sum of all forces acting on an object.
NEWTON'S 1ST LAW an object in motion will stay in motion, and an object at rest will stay at rest.
NEWTON'S 3RD LAW when an object applies force on another object, the second object applies a force of the same strength on the first object but the force is in the opposite direction.
FORCE PAIR the forces two objects apply to each other.
NORMAL FORCE the force that pushes perpendicular to the object's surface.
ELASTIC COLLISION when colliding objects bounce off each other.
INELASTIC COLLISION a collision in which the total kinetic energy of the colliding objects is not conserved, though momentum is conserved.
NON-CONTACT FORCE a force that one object applies to another object without touching it.
GRAVITY an attractive force that exists between all objects that have mass.
FIELD a region of space that has a physical quantity (such as a force) at every point.
WEIGHT the gravitational force exerted on an object.
INERTIA the fundamental resistance of any physical object to a change in its state of motion or rest, directly proportional to its mass.
Created by: user-2020829
 

 



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