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In physics, the Net force is the overall force acting on an object. To calculate net force, the body is isolated and interactions with the environment or other constraints are represented as forces and torques in a free-body diagram

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Kinetic friction is a force that acts between moving surfaces. An object that is being moved over a surface will experience a force in the opposite direction as its movement

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the resistance that one surface or object encounters when moving over another.

"a lubrication system that reduces friction

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Static friction is a force that keeps an object at rest. It must be overcome to start moving the object. Once an object is in motion, it experiences kinetic friction

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the rate at which someone or something is able to move or operate.

"we turned onto the runway and began to gather speed

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A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate