Mutemo wechitatu waNewton inoti kana chinhu 1 chikashandisa simba pachinhu 2, panguva imwe chete chinhu 2 chinoshandisa simba pachinhu 1. Hukuru hwemasimba maviri hwakafanana asi divi remasimba maviri rakapesana. Simba rimwe rinonzi chiito, rimwe richinzi reaction.
Chiratidzo chekuramba chinoratidza divi resimba. Chiito cheF chakanaka, nepo chiito cheF chisina kunaka. Izvi zvinoratidza kuti simba rekuita nerekuita riri munzira dzakasiyana.
Ita bvunzo kuti unzwisise zviri nani mutemo wechitatu waNewton. Kana uine skateboard, svetedza madziro wakamira pairi. Mushure mekunge wasvetedza madziro, skateboard inodzokera kumashure kubva pamadziro. Kusunda kwako kuri mberi, uku skateboard ichidzokera kumashure. Izvi zvinoratidza kuti madziro ari kukusundawo. Paunosvetedza madziro, madziro ari kukusundawo. Simba rako rekusunda rinoshanda pamadziro, ukuwo simba rekusunda madziro richishanda pauri. Masimba maviri aya akaenzana pahukuru asi akasiyana munzira. Unogona kudana simba rimwe kuti chiito uye rimwe kuti chiito.
Imwe nzira inogona kuitwa ndeyekuputitsa bharumu rerabha uye, mushure mekunge bharumu rakura nekuda kwekuzara nemhepo, bvisa bharumu. Mushure mekuburitswa, bharumu "rinobhururuka". Kutungamira kwekufamba kwebharumu kwakatarisana nekutungamira kwemhepo kubva mubharumu. Izvi zvingatsanangurwa sei? Kana muromo webharumu wavhurwa, bharumu rinosundira mweya kunze, uye panguva imwe chete, mhepo inosundirawo bharumu. Kusundidzira kwemhepo kunoita kuti bharumu ribhururuke. Kusundidzira kwemhepo kunoshanda pabhuroko uye kusundidzira kwebharumu kunoshanda mumhepo. Masimba ese ari maviri ane hukuru hwakafanana asi mativi akasiyana.
Funga nezvemufananidzo webhokisi rakagara pamusoro pevhu. Simba rakajairika rinoshanda pabhokisi (N) isimba rakajairika rinoitwa nepamusoro pevhu pabhokisi. Panguva imwe chete, bhokisi rinoshandisawo simba rakajairika pamusoro pevhu (N'). Masimba maviri aya akaenzana muhukuru asi akasiyana munzira uye anoshandawo pazvinhu zvakasiyana. Izvi zvakasiyana neN naw zvinoshanda pachinhu chimwe chete, kureva bhokisi. Saka N naN' masimba ekuita-kuita.
