Bray, Nancy (28a de Aprilo 2015). "Science".Arkivigite je 2023-05-30 per la retarkivo Wayback MachineNASA. Alirita la 20an de Marto 2023. "Mass can be understood as a measurement of inertia, the resistance of an object to be set in motion or stopped from motion."
Bray, Nancy (28a de Aprilo 2015). "Science".Arkivigite je 2023-05-30 per la retarkivo Wayback MachineNASA. Alirita la 20an de Marto 2023. "Mass can be understood as a measurement of inertia, the resistance of an object to be set in motion or stopped from motion."