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Unit Vocabulary

Study Guide

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 position
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 a moving object
Vector A quantity that has both magnitude and direction
Inertia An object's ability to resist any change in motion
Newton's 3rd 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
Force Pairs The force two objects apply to each other
Normal Force The force that pushes perpendicular to the object's surface
Elastic Collision When colliding object bounce off each other
Inelastic Collision When colliding object stick together or collision
Acceleration A measure of the change in velocity during a period of time
Contact Force A push or pull on one object by another object that is touching it
Newton's 2nd Law of Acceleration 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 1st Law of Inertia An object at rest will stay at rest, and an object in motion will stay in motion unless a force acts on the object
Non-Contact Force A force that one object applies to another object without touching it
Gravitiy An attractive force that exists between all objects that have mass
Field A region of space that has a physical quantity (such as force) at every point
Weight The gravitational force exerted on an object
Net Force The combination of all the forces acting on an object
Free-Body Diagram A simple model to understand what will happen to an object due to a force
Friction A contact force that resists the sliding motion of two surfaces that are touching
Created by: LiyaQ
 

 



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