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September 6

Science- Unit 2 Test

QuestionAnswer
Force A push or pull exerted on an object
Newton A unit measure that equals the force required to accelerate 1 kg of mass at 1m per second
Net force Overall forve on an object when all the individual forces acting on it are added together
Unbalanced force Forces that produce a nonzero net force(which changes an objects motion)
Balanced force Equal forces acting on an object in opposite directions
Friction Force that 1 surface exerts on another when the 2 surfaces rub against eachother
Static friction Objects are NOT moving
Sliding friction Solid surfaces slide over eachother
Rolling friction An object rolls over a surface
Fluid friction An object movs through a liquid or gas
Gravity Force that pulls objects toward eachother
Mass Measure of how much matter is in an object
Weight Measure of the force of gravity on an object
Free fall Motion of a falling object when the only force acting on it is gravity
Air resistance Objects falling through air experience a type of fluid friction
Terminal velocity Greatest velocity a falling object reaches
Projectile An object that is thrown
Intertia Tendency of an object to resist a change in motion
Momentum Product of an objects mass and velocity (multiplication)
Law of Conversation of Momentum States in the abstence of outside forces, the total momentum of objects that interact does NOT change
Created by: Avery Lamb
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