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Chapter_5-pre-lecture

# Chapter_5-pre-lecture - Force is the cause of acceleration...

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1         Force is the cause of acceleration. If the net force exerted on an object is zero, its velocity remains constant. Types of forces: Gravitational forces Electromagnetic forces (Nuclear forces) (Weak forces) When physical contact between objects is involved, one speaks of contact forces. When forces act across empty space, one speaks of field forces.

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2       Determine the strength of a force through the deformation of a spring. Forces behave as vectors, so use rules of vector addition to add them.       In the absence of external forces, when viewed from an inertial frame, an object at rest remains at rest and an object in motion continues in motion with constant velocity.
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Chapter_5-pre-lecture - Force is the cause of acceleration...

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