Uyini amandla adonsela phansi?
Amandla adonsela phansi angamandla okudonsa iplanethi noma enye into iye enkabeni yayo. Amandla adonsela phansi agcina wonke amaplanethi ezungeza ilanga. Amandla adonsela phansi (noma ukusheshisa okubangelwa amandla adonsela phansi) angamamitha angu-9,81 ngomzuzwana owodwa isikwele, ebusweni bomhlaba, ngenxa yobukhulu bomhlaba kanye nebanga esikubo ebusweni balo kusukela enkabeni yalo.