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| Newton's First Law of Motion |
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| We shall now study about the exact relation between the force applied and the motion of the object on which the force is applied. This was studied by Sir Issac Newton. He gave the three basic laws of motion concerning objects in motion. |
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| Sir Issac Newton formulated Galileo's observations into a law. This law is known as Newton's first law of motion. |
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| A body continues to be in a state of rest or of uniform motion along a straight line unless an external force acts upon it. |
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| This means that every object has a tendency to resist any change in its state of rest or motion. This tendency is inertia. This law is also known as law of inertia. |
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| Newton's first law of motion gives a qualitative definition of force. |
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