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Science forces
Science vocab and laws on forces
| Question | Answer |
|---|---|
| forces | can be combined to find net force which can change an object's motion |
| forces | pushes and pulls that are described by direction and strength which is measured in Newteons |
| forces | are exerted by two objects rubbing together, called friction |
| forces | that pull objects to eachother, called gravity |
| forces | related to motion are explained by newton's first law, newton's second law, and newton's second law |
| net force | the overall force on an object when all the individual forces acting on an object are added together |
| motion | the state in which one object's distance from another is changing |
| newton | symbol N a unit of measure that equals the force required to accelerate one kilogram of mass at a rate of one meter per second per second |
| friction | a force that one surface exerts on another when the two rub against each other, can be static, sliding, fliud, or rolling |
| the strength of friction depends on two factors: the types of surfaces involved and how hard the surfaces push together | |
| sliding friction | when solid surfaces slide over each other |
| rolling friction | when an object rolls over a surface |
| fluid friction | when an object moves through a fluid |
| mass | the amount of matter in an object |
| Newton's first law | states that an object ar rest will remain at rest and an object in motion at constant velocity will continue moving at constant velocity unless acted upon by an unbalanced force |
| newton's second law | the net force on an object is equal to the product of its acceleration and its mass |
| newton's third law | states that for every action there is an equal but opposite reaction |
| momentum | product of an object's mass and velocity, kilogram x meters per second |
| force | a push or pull |
| unbalanced forces | when there is a net force acting on an object, they can cause an object to start moving or change direction, they will change an object's motion |
| balanced forces | equal forces acting on an object in opposite directions, one force is exactly balanced by the other force, they will not change the objects motion |
| inertia | the tendency of an object to resist change in its motion |
| law of conservation of motion | states that the total momentum of the objects that ineract doesn't change, the quantity of momentum before and after they interact is the same |
| the total momentum of a group of objects remains the same unless outside forces act upon the objects |
Created by:
jumpthemoon
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