Umgama we-physics uboniswe njani? Imizekelo enomdla

Isihloko sinikezelwa kubafundi abanefilipi kuphela ngonyaka wokuqala. Apha asiyi kuthetha kuphela ngendlela umgama kwi-physics uboniswa ngayo, kodwa nakwezinye izinto ezinomdla. Vumela ukuba lo mbandela ujolise kuwo onke amanqaku nezihloko.

Uluphi umgama?

Kwi-physics, ubuninzi bomzimba ngamnye bunesimboli sayo (esichazwe ngesiLatin okanye ngesiGrike). Konke oku kwenziwa ukwenzela ukuba kube lula kwaye kungadideki. Kuyavuma, unokuhlushwa xa ubhala kwincwadi enxulumene neli binzana: umgama = isivinini x ixesha. Kwaye kwi-physics kukho kakhulu, iifom ezahlukeneyo ezininzi kunye neeparitha ezininzi. Kwaye kukho zombini ububanzi kunye namaxabiso e-cubic. Ngoko yiphi incwadi ebonisa umgama kwi-physics? Khawuleza ucacise ukuba kukho iintlobo ezimbini zeenkcukacha, kuba umgama kunye nobude bunamanani afanayo kunye neeyunithi ezifanayo zokulinganisa. Ngoko, i- "S" yiyo yonyani. Fumana ileta enjalo kwiingxaki okanye iifomula kwi-"Mechanics" icandelo.

Ndikholelwe, akukho nto inzima ekuxazululeni iingxaki. Kodwa unikezele ukuba uyazi izibalo kwaye unayo ixesha. Uzakufuna ulwazi malunga nokusebenza ngamaqhezu, ukukwazi ukubala, abazali abavulekileyo, ukuxazulula ukulingana. Ngaphandle kwezo zakhono kwi-physics kuya kuba nzima kakhulu.

Imizekelo ebomini

Uluphi umgama? Njengoko umgama kwi-physics uboniswe, sele siyiqonda. Ngoku makhe sijonge ingqiqo.

Khawucinge ukuba uhleli kufuphi nendlu yakho. Umsebenzi wakho ukufikelela esikolweni. Le ndlela ilungile ngexesha lonke. Hamba kumandla malunga nemizuzu emibini. Ukusuka emnyango wokungena kwiingcango zee-200 zemitha. Lo ngumda. Yintoni eya kuba yinkcazo yokuhamba kwakho ukusuka ekhaya ukuya kwisikolo?

S = 200 m.

Kutheni asizange sibhale "iimitha" kwaye sizenzele kuphela kwileta? Kungenxa yokuba unjalo isicatshulwa esibhaliweyo. Kancinane kamva siya kuqhelana nezinye iiparitha ezihambelana nomgama.

Kwaye ngoku ucinga ukuba umendo ophuma endlwini ukuya kwisitorethi unxantathu. Ukuba ukhangele imephu yendawo yakho, uya kubona ukuba umgama ukusuka kwindlu ukuya kwisitolo kufana nokuphambi kwesikolo. Kodwa kutheni umendo ude kangaka? Ngenxa yokuba indlela ayilunganga. Simele sihambe kwizibane zendlela, ji keleza isakhiwo esikhulu sendawo kwaye uvele ufike esitolo. Kule meko, umgama oza kubakho omkhulu. Kwijometri kunye ne-physics, oku kuthetha "indlela ephilileyo". Umda ochanekileyo umgama ococekileyo nje, njengokungathi uhamba udonga lwendlu enkulu. Unokunika umzekelo kunye nendoda eya emsebenzini.

Yintoni ehambelana nomgama?

Ingcamango ye "umgama" ayikwazi ukuba khona ngokwayo, kufuneka idlale indima ethile. Ngokomzekelo, ugibele ibhasikiya esikolweni, kwaye ungahambi ngeenyawo, kuba sele ufike. Njengoko satsho ngaphambili, indlela yethu yesikolo ihambelana ngqo. Unokuhamba ngokukhuselekileyo endleleni. Ngokuqhelekileyo, ukuba uhamba ngeenyawo, kuya kuthatha ixesha elide kunokukwenza indlela kwibhayisikili. Yintoni le nto apha? Intetho, eqinisweni, malunga nesantya ohamba ngayo. Kamva siya kubona iifomula eziza kubangela indlela yokufumana umgama. I-physics yenzululwazi apho kuyimfuneko ukubala into ethile. Ndiyavuma, ndiyazibuza ukuba uhamba ngebhayisiki ngokukhawuleza? Ukuba uyazi kakuhle umgama ukuya esikolweni kunye nexesha lokuhamba, uya kufumana isivinini.

Ngoko, sinamaparitha emibini ngaphezulu:

T lixesha,

Isantya.

Yonke into iya kuba yinto enomdla ngakumbi xa ufunda indlela yokusebenza ngamafomula kwaye ufumane engaziwa ngamaqhezu. Siyakhumbula kuphela ulawulo oluvela kwimathematika: yonke into esekelwe kwizinto ezingaziwa iya kwi-denominator (oko kukuthi, phantsi kwecandelo). Umzekelo, umgama wemimandla (i-physics) ngumveliso wexesha kunye nesivinini. Kwaye kwezinye iimeko - amaqhekeza. Jonga umfanekiso, obonisa indlela yokufumana umgama, isivinini kunye nexesha. Qiniseka ukuba usebenzise kwaye uqonde indlela yokufumana ifomula ezinjalo. Yonke into ilandela kuphela kwimithetho yeemathematika, akukho nto iveliswe kule fomula. Masiqhelise (musa ukuhlola): yiphi ileta ibonisa umgama kwi-physics?

Ziyintoni ezilinganiswayo?

Masithemba ukuba ukhumbule ukutyunjwa kwezinto eziphambili, izikhundla zabo. Ixesha lokufunda iiyunithi zokulinganisa. Nanku, kuya kufuneka uqeqeshe imemori, khumbula. Kubalulekile ukwazi, kungekuphela nje indlela umgama kwi-physics okhethwe ngayo, kodwa nexesha, isivinini. Kodwa esi sihloko esincinane kuphela. Ukuqhubeka kuya kuba nzima nakakhulu. Masiqale:

I-S-distance-meter, kilometer [km], [km];

Isantya - iimitha ngomzuzwana, iikhilomitha ngeyure [m / s], [km / h] (kwimeko yokukhawuleka kwe- cosmic , ikhilomitha ngesibini ingafakwa;

Ixesha lesibini -, elinesibini, iyure, [i-min], [h].

Phawula indlela isivinini siboniswe ngayo. Kunene, ukudubula. Khawucinge ngoku: S / t = m / s okanye S / t = km / h. Yilapho iinqhezu zivela khona. Kwiinkqubo ze-SI zamazwe ngamazwe la ma parameters aneemitha zamanani, yesibini, imitha nganye ngesibini.

Siye saqikelela indlela umgama kwi-physics uboniswe ngayo, sihlolisise ixesha kunye nejubane, ezidibeneyo ngokuthe ngqo.