pattern of motion - the manner in which objects move due to their structure, shaft - a long, thin structure that can be used as an axle or axis, axle - a shaft that runs through the center of a wheel, system - two or more objects that work together in a meaningful way, ramp - an object that has a slope, slope - a surface that is higher on one end, wheel - an object that is a circle in only one direction and can fall over, friction - a force between objects that are touching each other that opposes their motion, slowing them down,

Motion

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