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Forces
Chapter 10 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 arent 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 an object is gravity. |
projectile | a thrown object |
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 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 object slides over another |
unbalanced forces | forces that cause an objects velocity to change |
air resistance | the fluid friction experienced by objects falling through the air |
gravity | the force that pulls objects towards eachother |
weight | a measure of the amount of gravity on an object |
fluid friction | friction that occurs as an object moves through a fluid |
inertia | the tendency of an object to resist any change in its motion |
satellite | any objects that orbits around another object in space |
momentum | the product of an objects mass and velocity |
friction | the force that one surface exerts on another when the two surfaces rub against each other |