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Forces & Motion

Vocab

QuestionAnswer
Displacement The difference between the starting(initial) 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
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 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.
Friction A contact force that resists the sliding motion of two surfaces that are touching
Free-body diagram A simple model to understand what will happen to an object due to a force
Net force The combination of all the forces acting on an object
Newton's first law An object at rest will stay at rest, and an object in motion will stay in motion unless a force acts on the object
Created by: user-2020871
 

 



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