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# What is force and motion?

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Force is any influence to an object which changes its motion, while motion itself is the change in position of an object in relation to is speed, location and acceleration. There cannot be movement without force used against an object to set it in motion.

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A bicycles tires move because the person riding it exerts force on the pedals, which in turn moves the chain and the tires. This force causes the bike to be in motion. If there is no force being exerted on an object, then the object is said to be at rest and have a constant position. An object's motion cannot change unless force is acted upon it as stated by Newton's First Law.

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## Related Questions

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Friction is a force that opposes motion, so it is unhelpful in all situations where the motion of an object is desired. A by-product of friction is that energy is wasted in the form of heat, which can cause problems in temperature-sensitive environments.

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The law of inertia states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. The law of inertia is sometimes referred to as Newton's first law of motion.

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The law of inertia is a fundamental physics principle used to describe how an object behaves in motion or at rest, particularly when forces are applied to it. The object can be anything that has mass.