<prompt> Ukuphenya: Kuyaziwa ukuthi uNewton wayelokhu ebhekene nomqondo wokuthi amandla adonsela phansi emhlabeni anwebeka, ngokulingana kwesikwele, kuya eNyangeni; kodwa-ke kwamthatha amashumi amabili eminyaka ukuthuthukisa inkolelo-mbono egcwele. Umbuzo wawungekho ukuthi ngabe amandla adonsela phansi akhona yini, kodwa ukuthi ngabe anwebeka kude nezwe ukuthi angaba namandla okubamba iNyanga emzileni wayo. UNewton wabonisa ukuthi uma amandla encipha njengesikwele esiphambene sobude, umuntu angakwazi ngempela ukubala isikhathi sokujikeleza kweNyanga, futhi athole ukuvumelana okuhle. Waqagela ukuthi amandla afanayo abhekene nokunye ukunyakaza kokujikeleza, ngakho-ke wayiqamba ngokuthi amandla adonsela phansi emhlabeni wonke. Umbuzo: Yini eyabuzwayo mayelana namandla adonsela phansi?  <response>: noma ngabe yayisekude kakhulu neZwe ukuthi kungenzeka futhi ukuthi ingamandla abambelela iNyanga emzileni wayo 