Forces, Motion and Machines

Science

a change in velocity with respect to time
Watch acceleration Simple Definition
the force used on a simple machine
Watch effort force Simple Definition
the push or pull exerted on an object
Watch force Simple Definition
the force that opposes motion between two surfaces that are touching
Watch friction Simple Definition
fixed point on which a lever pivots
Watch fulcrum Simple Definition
the attractive force between all objects that have mass
Watch gravity Simple Definition
a simple machine with a flat, sloped surface
Watch inclined plane Simple Definition
the tendency of objects to resist any change in motion
Watch inertia Simple Definition
a simple machine that consists of a bar that pivots on a fixed point
Watch lever Simple Definition
a device that uses electrical energy to do work
Watch load Simple Definition
a change in an object’s position
Watch motion Simple Definition
the location of an object
Watch position Simple Definition
a simple machine made of a wheel with a rope around it
Watch pulley Simple Definition
a simple machine made of an inclined plane wrapped around a cylinder
Watch screw Simple Definition
a device that changes a force with one movement, like a lever, inclined plane, wedge, screw, wheel and axle, or pulley
Watch simple machine Simple Definition
the distance an object travels per unit of time
Watch speed Simple Definition
speed and direction of a moving object
Watch velocity Simple Definition
a simple machine made of one or two inclined planes
Watch wedge Simple Definition
measure of the force of gravity on an object
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a simple machine made of a wheel with a rod joined at its center, they rotate together
Watch wheel and axle Simple Definition
the use of force to move an object over a distance, its unit is the Joule (J)
Watch work Simple Definition

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