Speed yayoma

Yinto eyaziwayo ukuba Earth etsala naliphi na iqumrhu obuciko wayo entsimini ekuthiwa-omxhuzulane. Oku kuthetha ukuba mkhulu umgama phakathi umzimba kunye umphezulu iplanethi yethu, kokukhona amandla komhlaba luchaphazela kuye, yaye ngakumbi ndilithethile amandla womxhuzulane.

On omzimba owela nkqo kwehlisa, solo abachatshazelwa amandla ngasentla, ngenxa ngezenzo umzimba uya awe phantsi. Kuhleli kukho umbuzo avulekileyo ukuba ziya kuba yintoni ngesantya ekwindla? Kwelinye icala, xa isifundo iphembelela ukuxhathisa umoya, Esiqinileyo ngokwaneleyo, enye - ngokuqina umzimba ababetsaleleke Umhlaba kunokuba is de kuyo. Lokuqala - ngokucacileyo kuba njengomqobo, nokunciphisa isantya yesibini - ukunika unikezelo nesantya ukwanda. Ngoko ke, kukho abathile umbuzo ukuba ngaba kunokwenzeka ukuzikhulula Yiwa uwele emhlabeni? Ngokwenene, i- ukuwa umzimba kunokwenzeka kuphela emoyeni, apho kungekho uphazamiseko kwi indlela yokuchasa ukungena komoya. Nangona kunjalo, ngaphakathi sikhokelo physics mihla, ukuwa simahla umzimba ithathwa ukuba intshukumo nkqo, engaquki ukuhlangabezana ingxolo (ukumelana umoya nokungahoywa kulo mzekelo).

Eyona nto kukuba ukudala iimeko apho into esiwa alichatshazelwa kwezinye amandla, ingakumbi, umoya mnye, singakwazi okwenziwe kuphela. Kuye ngokomfuniselo wabonisa ukuba uqina sokuwa simahla umzimba kungekho kusoloko inani elifanayo kungakhathaliseki ubunzima bomzimba. Le intshukumo kuthiwa ngokufanayo olukhawulezileyo. Kuye kuchazwe kuqala yamachiza wodumo ngeenkwenkwezi UGalileo Galilei kwiinkulungwane ezingaphezu kwama-4 eyadlulayo. Ukufaneleka le miphumela ongazange alahlekelwe amandla kwayo unanamhla.

Njengoko sele kukhankanyiwe, ukuwa ekhululekileyo umzimba kwisakhelo yobomi bemihla ngemihla - oko lunemiqathango, kwaye ayikho igama kakhulu elichanekileyo. Phezu free-ukuwa Velocity yequmrhu ayikho iyunifomu. Umzimba yimithwalo, apho eso sindululo ichazwa njenge ityala ekhethekileyo motion ngokufanayo okukhawulezileyo. Ngamanye amazwi, isantya ngamnye umzimba yesibini iya kwahluka. Ukugcina engqondweni lo mlinganiselo, sinokufumana uqina zokuwa simahla umzimba. Ukuba ngaba ukunika isifundo lunikezelo (oko kukuthi, musa uyilahle, kodwa befuna nje ukusuka kubude), uqina yayo yokuqala zero: Vo = 0. Nayo yonke Isantya yesibini iya kwandisa ngokomlinganiselo ixesha elidlulileyo nesantya: gt.

Kubalulekile ukuphawula kwigalelo bume g. Le - kukukhawuleziswa womxhuzulane. Eku sunguleni, sele sibonile phambi kokuba unikezelo xa umzimba esiwa phantsi kweemeko eziqhelekileyo, ie, phambi komoya yaye phantsi kwempembelelo womxhuzulane. Nayiphi na umzimba iwela emhlabeni unikezelo alinganayo 9.8 m / s2, nokuba sobunzima bayo.

Ngoku, ebhekisela kwamathandabuzo, ukufumana indlela eya ukubala isantya ukuwa simahla umzimba:

V = Vo + gt.

Oko kukuthi, ukuba umlinganiselo lokuqala (ukuba wamnika umzimba wakhe ngokuyilahlela, atyhale, agibiseleke okanye ezinye zazo) ukudibanisa imveliso womxhuzulane kokuba unikezelo kwi inani lemizuzwana it asithathe umzimba ukufikelela kumphezulu. Ukuba Velocity yokuqala zero, ngoko ifomula uba:

V = gt.

Loo nto nje imveliso yokunyusa womxhuzulane ngelo xesha.

Ngokufanayo, ukwazi isantya into esiwa ezamahala, kunokwenzeka baphethe ixesha intshukumo okanye Velocity sokuqala.

Kufuneka kwakhona kubekho indlela ahluka ukubala isantya umzimba uphoswe kwi-engile ukuya tye, njengoko kulo mzekelo uya kwenza amandla, ngokuthe ngcembe behlise phantsi isantya intshukumo aphoswe into.

Kwimeko ingqalelo sithi, umzimba usebenza kuphela amandla womxhuzulane kunye nomoya ukumelana ukuba, ubukhulu becala, aluchaphazeli isantya utshintsho.