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Forces

Chapter 2 test

Force a push or pull
newton The strength of a force
Net Force The combination of all forces acting on an object
Unbalanced force Whenever there is net force acting on an object the object is unbalanced
Balanced force Equal forces acting on one object in opposite directions
Friction The force that two surfaces exert on each other when they rub against each other
Static friction The friction that acts on objects that are not moving
Sliding friction occurs when two solid surfaces slide over each other
Rolling friction occurs when an object rolls across a surface
Fluid Friction occurs when a solid object moves through a fluid
Gravity a force that pulls objects toward each other
Mass a measured amount of matter in an object
Weight The force of gravity on a person or object at the surface of a planet
Free Fall When the only force acting on an object is gravity the object is said to be in ____ ____
Air resistance Objects falling through air experience a type of fluid friction called ___ __________
Terminal velocity the greatest velocity a falling object reaches
Projectile an object that is thrown
Inertia Galileo's concept of air resistance to a change in motion
Momentum A characteristic of a moving object that is related to the mass and the velocity of an object
law of conservation of energy States that, in the absence of outside forces the total momentum of objects that interact does not change
Satellite any object that orbits another object in space
Centripetal force Any force that causes an object to move in a circular path
Linear motion in a straight line
Projectile Motion along a curved path
Rotational Spinning motion around a fixed/stationary point
Vibrational Series of small but fast back and forth movements or side to side
Created by: Awsomeperson
Popular Physics sets

Voices

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