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Force and Motion

Vocabulary words from unit on force and motion

WordDefinition
speed a measure of an object's change in distance or positon in a certain time
motion any change from one positon to another
balanced force When forces acting on an object are equal
Unbalanced force When forces acting on an object are not the same.
position a certain place
force a push or a pull
speedometer an instrument used to measure speed
push press against in order to move away
pull use force to cause something to move after itself
kilometers per hour metric unit used to represent speed
miles per hour customary unit used to represent speed
friction a force that resist motion between two bodies in contact
inertia The tendency of an object to resist a change in its state of motion.
Gravity A force that pulls something toward earth.
velocity The speed and direction of travel of an object.
acceleration A change in velocity.
simple machine devices with few moving parts that make work easier to do.
work Using force to move an object through a distance.
lever a simple machine that has a bar that rest on a fulcrum.
wheel and axle A simple machine that has a wheel that rotates around an axle.
Pulley A simple machine with a wheel with a groove in the rim that has a rope.
incline plane A simple machine that is flat and slanted.
wedge An incline plane that is used to separate things.
Screws An incline plane wraped around a cylinder.
fulcrum A pivot point on a lever.
resistance arm A part of a lever that produces the lift.
effort arm A part of a lever that you apply the force.
momentum The force or speed of a moving object.
kinetic energy Energy of motion
potential energy Stored energy
Created by: MDHancock
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