https://mech.subwiki.org/w/index.php?action=history&feed=atom&title=Newton%27s_first_law_of_motionNewton's first law of motion - Revision history2026-10-14T19:11:30ZRevision history for this page on the wikiMediaWiki 1.41.2https://mech.subwiki.org/w/index.php?title=Newton%27s_first_law_of_motion&diff=147&oldid=prevVipul: Created page with '==Statement== ===In terms of force=== In an inertial frame, if the net external force on a system is zero, the net acceleration of the system (which can be measured, for in…'2010-01-20T20:47:48Z<p>Created page with '==Statement== ===In terms of force=== In an <a href="/w/index.php?title=Inertial_frame&action=edit&redlink=1" class="new" title="Inertial frame (page does not exist)">inertial frame</a>, if the net external force on a system is zero, the net acceleration of the system (which can be measured, for in…'</p>
<p><b>New page</b></p><div>==Statement==<br />
<br />
===In terms of force===<br />
<br />
In an [[inertial frame]], if the net external force on a system is zero, the net acceleration of the system (which can be measured, for instance, via the acceleration of its [[center of mass]]) is zero. Thus, the center of mass of the system undergoes uniform linear motion.<br />
<br />
For a single particle, this states that if the net external force on the particle is zero, the net acceleration of that particle is zero. Thus, the particle undergoes uniform linear motion.<br />
<br />
===In terms of momentum===<br />
<br />
The [[linear momentum]] version of Newton's first law of motion is: if the net external [[impulse]] on a system is zero, the linear momentum of the system does not change. As a special case, for a closed system, which is a system that does not experience any forces from outside, the linear momentum does not change. This law is termed the [[conservation of linear momentum]].<br />
<br />
===Along a particular coordinate axis===<br />
<br />
The following is a version of Newton's first law along a particular axis: if the component along an axis of the net external force on a system is zero, the acceleration of the system has zero component along that direction.<br />
<br />
==Related facts==<br />
<br />
* [[Conservation of linear momentum]]<br />
* [[Angular analogue of Newton's first law of motion]], [[conservation of angular momentum]]<br />
* [[Newton's second law of motion]]<br />
* [[Newton's third law of motion]]</div>Vipul