A body remains at rest or in motion with a constant velocity unless acted upon by an external force.
1 The first law of magic is as neutral as Newton's first law of motion .
2 In other words, he had come to grasp the meaning of the first law of motion .
3 Sir Isaac Newton's first law of motion was well illustrated at a fun science day in Dublin's Mansion House yesterday.
4 But this fact, which is expressed in what we now term the first law of motion , was extremely difficult to grasp.
5 The first law of motion is, that a ball once projected will fly on to all eternity with undiminished velocity, unless something checks.
6 Aristotle's first law of motion says that the natural state of an object is at rest (not moving at a constant speed).
7 The first law of motion teaches us that a body in motion, if acted on by no force, will move in a straight line.
8 We are like a man who should endeavor to construct a perfect system of dynamics on the violation of Newton's first law of motion .
9 Under such conditions, therefore, this part of Newton's First Law of Motion is physically conceivable.
11 Now what is the testimony of observation and experiment in regard to this part of the First Law of Motion ?
12 "That damn first law of motion again!" Jessica groaned.
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