Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Newton ta cannonball wani tunani gwaji Isaac Newton amfani da su zaton cewa karfi na nauyi ya duniya, kuma shi ne key karfi ga duniya motsi. Ya bayyana a cikin littafinsa A Treatise of the System of the World.  Tambaya: Wane gwaji ne na Newton aka yi amfani da shi don ya zo ga ƙarshe cewa nauyi iri ɗaya ne a tsakanin abubuwa?
Ƙwallon bindiga na Newton