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Science Notes

QuestionAnswer
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
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
Acceleration A measure of the change in velocity during a period of time
Force A push or a pull on a object
Contact Force A push or a pull on one object by another object that is touching it.
Newton's 2nd Law The acceleration of an object equals the net force on the object divided by the object's mass
Friction A force that resists the sliding motion of two surface 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 the 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 unless acted on by a force
Interia 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 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 When object collide and stick together
Non Contact Force A force that one object can apply 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 a object
Created by: IsabelMoreno
 

 



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