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==通常的现代表述==
==通常的现代表述==
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*第一定律：假若施加于某物体的外力为零，则该物体的运动速度不变（也称'''惯性定律'''）。
*第一定律：假若施加于某物体的外力为零，则该物体的运动速度不变（也称'''惯性定律'''）。
*第二定律：施加于物体的外力等于此物体的质量与加速度的乘积（也称'''加速度定律'''）。
*第二定律：施加于物体的外力等于此物体的质量与加速度的乘积（也称'''加速度定律'''）。
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==文言版==
==文言版==
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*律一曰：[[天演論#嚴復自序|靜者不自動，動者不自止；動路必直，速率必均。]]
*律一曰：[[天演論#嚴復自序|靜者不自動，動者不自止；動路必直，速率必均。]]
*律二曰：質量加速度積與物力相侔。
*律二曰：質量加速度積與物力相侔。
−*律三曰： 凡 力必 逆向 等 值 而反。
+*律三曰： 施 力必 受反，值 等而 向 反。
==拉丁语原文==
==拉丁语原文==
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*{{lang|la|Lex. I. Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in directum, nisi quatenus a viribus impressis cogitur statum illum mutare.}}
*{{lang|la|Lex. I. Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in directum, nisi quatenus a viribus impressis cogitur statum illum mutare.}}
*{{lang|la|Lex. II. Mutationem motus proportionalem esse vi motrici impressæ, & fieri secundum lineam rectam qua vis illa imprimitur.}}
*{{lang|la|Lex. II. Mutationem motus proportionalem esse vi motrici impressæ, & fieri secundum lineam rectam qua vis illa imprimitur.}}
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==英文译文==
==英文译文==
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*{{lang|en|LAW I. Every body perseveres in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed thereon.}}
*{{lang|en|LAW I. Every body perseveres in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed thereon.}}
*{{lang|en|LAW II. The alteration of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.}}
*{{lang|en|LAW II. The alteration of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.}}
*{{lang|en|LAW III. To every action there is always opposed an equal reaction: or the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.}}
*{{lang|en|LAW III. To every action there is always opposed an equal reaction: or the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.}}