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Forces & Motion Voc

vocabulary words 5th grade

QuestionAnswer
Simple Machines A tool that makes work easier; has few or no moving parts.
Inertia An object will remain at rest or in motion unless it is acted on by a force
Accelerate To start to move, speed up, slow down, stop or change directions.
Unbalanced Forces Forces that have a net force or a net force that is not zero; one force greater than the other.
Momentum The product of the mass & velocity of an object; How hard it is to slow down or stop an object
Friction A force that opposes, or acts against, motion when 2 surfaces rub against each other; a force that acts on an object to slow or stop it.
Gravity The force that pulls things toward Earth.
Compound Machine Machine made from more than one simple machine.
Balanced Forces Forces that have a net force of zero. Equal & opposite forces (cancel each other)
Energy The capacity to do work - move muscles, operate machines, cook meals, heat rooms.
Speed A measurement of distance over a period of time.
Force A push or pull of an object.
Inclined Plane A flat surface that is slanted
Pulley A rope that is threaded through a wheel or disk.
Fulcrum Point where a lever pivots
Wheel and Axle A shaft attached to the center of a wheel
Action Force The 1st Force; Newton's Third Law
Reaction Force the force that pushes or pulls back; Newton's Third Law
Newton's 1st Law An object at rest will remain at rest & an object moving will continue in a straight line unless acted on by an outside force.
Newton's 2nd Law The change in an object's motion depends on its mass and the force acting on it.
Newton's 3rd Law For every action, there is an equal and opposite reation.
Position The location of an object
Net force The result of 2 or more forces acting on an object. Measured in Newtons.
Magnetism The force of repulsion (pushing) or attraction (pulling) between poles of magnets.
Work The use of a force to move an object through a distance.
Joule Unit of work.
Power The amount of work done for each unit of time.
Watt Unit of power.
Created by: jlorentz52
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