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forces vocab :)
Question | Answer |
---|---|
momentum the amont of matter in somthing | the pruduct of an objects mass and it volocity centriptal force |
formula for monmentum the force that is pulling an object in circular motion towerdas the center of the circle | m= pvgeosynchronous orbit |
law of conversation of momentum | the toltal momentum of any group of objects remains the same unless outside forces also act on the objects |
force | a push or a pull that gives energy to an object |
unit of force | forces are mesured in newtons N |
net force | the total of all forces acting on an object |
inertia | the tendency of matter to resist a change in its motion |
balanced forces | the net force acting on an object is zero |
unbalanced forces | the net force acting on an object is not zero |
magnitude | the amount of a mesurement |
friction | a force that one suface exerts on another when the two surfaces are in contact with each other |
static friction | friction between non-moving objects |
kinetic friction | friction between moving objects |
sliding friction | friction between objects that slide against each other |
rolling friction | occures when an object rolls a surface |
fluid friction | occurs when an object moves through a fluid or a gas |
newtons first law of motion | objects at rest will stay at rest & objects in motion will stay in motion at a constant velocity unles acteds on by an unbalanced force |
netons second law of motion | the net force acting on an object is equal to the product of the objects mass and acceleration |
newtons third law of motion | for every acting force there is a reaction force that is equal , but acts in the oppisite direction |
law of universal gravition | all objects in the universe are attracted to each other strenths of attraction depends on the objects masses and distance from each other |
freefall | the motiong of an object when gravity is the only force acting on it |
terminal veloity | greatest velocity of a falling object occures when the force of gravity is equal to the force friction |
weight | a measure of he force of gravity on an object |
geoynchronous orbit | occurs when the an object orbits another object at a rate equal to the 2nd objects rate of rotation |