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Chapter 2 Vocab
science
Term | Definition |
---|---|
force | push or pull |
newton | basic SI unit of force |
net force | combination of all forces acting on an object |
Unbalanced forces | whenever net forces are acting on an an object |
balanced forces | equal forces acting on an object |
friction | force that objects exert when they rub against each other |
static friction | friction acting on stationary objects |
sliding friction | friction when two solid objects |
rolling friction | friction when an object rolls across a surface |
fluid friction | friction when a solid object moves through a fluid |
gravity | force that pulls objects towards each other |
mass | amount of matter in an object |
weight | force of gravity on a person or object |
free fall | only gravity is acting on an object |
air resistance | upward force exerted on falling objects |
terminal velocity | when air resistance = weight |
projectile | object that is thrown |
Inertia | resistance of motion |
satellite | any object that rotates around nother object in space |
centripetal force | force caussing objects to move in a circular path |