Field - an area of influence that exerts a force on an object, Force - a push, pull or twist on an object when it interacts with another object., Friction - a force opposite to the motion of surfaces in contact, interact - act on each other, Motion - the change in position of an object over time, magnitude - the size or power of an object, energy or force, net force - the sum of all forces acting on an object, deform - change shape, impact - the effect of a force, static friction - a friction force that keeps an object in place on a surface, lubrication - a substance that makes a surface slippery or smooth,

Contact Forces

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