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Force and Motion

Vocabulary

QuestionAnswer
the starting point you choose to describe the location, or position, of an object. Reference point
an object's distance and direction from a reference point. position
the process of changing position. motion
the difference between the initial, or starting, position and the final position. displacement
a measure of the distance and object travels in a given amount of time. speed
the speed and direction of a moving object. velocity
a measure of the change in velocity during a period of time. acceleration
A quantity that has both magnitude and direction. vector
a push or a pull on one object force
a push or a pull on one object by another object that is touching it. contact force
law that states that the acceleration of an object is equal to the net force exerted on the object divided by the object's mass Newton's second law of motion
contact force that resists the sliding motion of two surfaces that are touching. friction
a simple model to understand what will happen to and object due to a force. free-body diagram
the combination of all the forces acting on an object. net force
an object at rest will stay at rest, and an object in motion will stay in motion unless a force acts on the object. Newton's first law of motion
when an object applies a 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. Newton's third law of motion
the forces two objects apply to each other. force pair
the gravitational force exerted on an object weight
the force that pushes perpendicular to the object's surface. normal force
when colliding objects bounce off each other. elastic collision
a force that one object applies to another object without touching it. noncontact force
an attractive for that exists between all objects that have mass. gravity
a region of space that has a physical quantity (such as a force) at every point. field
Created by: user-2014770
 

 



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