地心系,地球赤道加速度a=34X102m/s2 日心系,地球公转轨道加速度a=6x103m/s2 银河系,太阳向心加速度a=3x1010m/s2 A frame that keeps rest or uniform linear motion elative to any inertial frames, is an inertial frame Newtons first law is often called the law of inertia See动画库/力学夹/2-01德行与惯性,exe地心系, 地球赤道加速度 a=3.4x10-2m/s2 日心系, 地球公转轨道加速度 a=6x10-3m/s2 银河系, 太阳向心加速度 a=3x10-10m/s2 • Newton’s first law is often called the law of inertia.  • A frame that keeps rest or uniform linear motion, relative to any inertial frames, is an inertial frame. ⚫ See 动画库/力学夹/2-01德行与惯性.exe