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forces
Term | Definition |
---|---|
centripetal force | a force that causes an object to move in a circle |
rolling friction | friction that occurs when an object rolls over a surface |
newton | the SI unit used for the magnitude, or strength, of a force |
force | a push or pull exerted on an object |
static friction | friction that acts on objects that are not moving |
compression | an elastic force that squeezes or pushes the molecules in matter together |
balanced forces | equal forces acting on an object in opposite directions |
mass | a measure of how much matter is in an object |
free fall | the motion of a falling object when the only force acting on it is gravity |
net force | the overall force on an object when all the individual forces acting on it are added together |
law of conservation of momentum | the rule that in the absence of of outside forces the total momentum of objects that interact does not change |
tension | an elastic force that stretches or pulls on the molecules in matter |
sliding friction | friction that occurs when one solid surface slides over another |
unbalanced force | forces that cause an objects velocity to change |
air resistance | the fluid friction experienced by objects falling through air |
gravity | the force that pulls objects towards each other |
weight | the measure of gravity on an object |
fluid friction | friction that occurs when an object moves through a fluid |
inertia | the tendency of an object to resist any change in its motion |
satellite | an object that orbits around another object in space |
momentum | an objects mass |
friction | the force one surface exerts on another when they rub together |
projectile | an object that is thrown |