Ifomula ka "Isivinini, isikhathi, nebanga." Indlela ukuxazulula le nkinga?

Ake esikoleni physics sifundo liphendulwe umdlalo okuthakazelisayo! Kulesi sihloko, Heroine yethu kuyoba formula "Isivinini, isikhathi, nebanga." Hlaziya eceleni ipharamitha ngamunye, sethula ezinye izibonelo ezithakazelisayo.

isivinini

Uyini "isivinini"? Ungabona kanjani umuntu imoto iya ngokushesha, omunye kancane; omunye umuntu ekhulumela behamba, elinye - hhayi ngokushesha. Abagibeli bamabhayisikili badlula futhi ukuhamba ngejubane elingafani. Yebo! Lokho izinga. Asho na? Yiqiniso, ibanga ukuthi wayeyindoda. Mina eshayela imoto kwabanye yesikhathi esithile. Ucabange ukuthi umuntu isivinini 5 km / h. Lokho kuyinto angu-1, wayengumuntu 5 amakhilomitha.

Indlela yokuthola ijubane, isikhathi, ibanga? Asiqale ngesivinini. Bhekisisa, lokho kukalwa? Ngokwemvelo, km / h m / s. Zikhona nezinye amayunithi, isib, km / s (emkhathini), mm / h (e-biochemistry). Nakani yini umi phambi uphawu nangemva "/". Okokuqala, lisho "roll", okusho ukuthi numerator - mm, km, m, e-zihilela - h, s, imiz. Okwesibili, kubonakala lokhu kuyinto okusikhumbuza ifomula, akunjalo? Amakhilomitha, amamitha - ibanga, ubude, kanye ihora, eyesibili, ngomzuzu - isikhathi. Ngakho kakhulu ithiphu. Kwakulula ukukhumbula indlela yokuthola ijubane, bheka akukho iyunithi (km / h, m / s). Amagama wedwa:

v = S / t = km / h.

isikhathi

Uyini isikhathi? Yiqiniso, kuncike ijubane. Ngokwesibonelo, usalindile embundwini unina endlini nomfowethu omdala. Bahamba kuzo esitolo. ngaphambili kakhulu umzalwane weza. Umama kwadingeka alinde imizuzu engu-5 Kungani? Ngoba babengaqiniseki ngesilinganiso ezahlukene. Yiqiniso, ukuze uthole ngokushesha endaweni oya kuyo, udinga ukwengeza isivinini ukusheshisa hambisa acindezele "Ukhona" emotweni nzima, ukuba bahlakazeka ngebhayisekili. Kuphela uma ehlehlela emuva, qaphela futhi baqaphe ukuze singathwesi zizithela othile noma into ethile.

Indlela yokuthola isikhathi? Sine isivinini ithiphu - km / h. Futhi indlela ukuba nalezi zikhathi? Okokuqala, isikhathi esilinganiswa ngezilinganiso imizuzu, imizuzwana, amahora. Ifomula ka "isivinini, isikhathi, ibanga" uguqulwa kanje:

isikhathi t [isekhondi., imiz., ihora] = S [m, mm, km] / v [m / s, mm / imiz, km / h].

Uma ukuguqula ucezu yonke imithetho wezibalo, unciphise ipharamitha ibanga (ubude), kuhlale eyesibili, ngomzuzu noma ihora kuphela.

Ibanga, indlela obuphelele siwela

Lapha-ke kuyoba lula ukuyisebenzisa, maningi amathuba, abashayeli abanokuhlangenwe odometer uhambo ngemoto. Bazokwazi ukuthola ukuthi mangaki amakhilomitha ahanjiwe, kodwa futhi ukwazi isivinini. Kodwa njengoba ukunyakaza engalingani, bese usetha tonoe ethutha akusebenzi, ngaphandle sithatha ngesivinini esingamakhilomitha.

Formula endleleni (ibanga) - umkhiqizo velocity isikhathi. Yiqiniso, inketho elula kakhulu futhi ezingabizi - sekuyisikhathi. Iwashi kuyinto nhlobo. isivinini abezinyawo akulona 5 km / h, kanti cishe. Ngakho-ke, kungase kube nephutha. Kuleso simo, uzowathola ukuthatha kangcono ibalazwe ndawo. Phawula lokho esikalini. Kumele wabonisa bangaki amakhilomitha noma amamitha 1 cm. Namathisela umbusi ubuye ukale budze. Ngokwesibonelo, ekhaya umculo esikoleni endleleni enqophileko. Ingxenye A Ubuyisé 5 cm on esikalini wabonisa 1 cm = 200 m kusho ukuthi ibanga real - .. 200 * 5 = 1000 m = 1 km. Kungakanani uya ibanga? Kwaphela isigamu sehora? ukukhuluma Ngokomthetho, 30 = 0.5 imiz h = (1/2) amahora. Uma thina ukuxazulula le nkinga, kuvela ukuthi uhambe ngesivinini 2 km / h. Njalo kuzosiza ukuxazulula inkinga ifomula "ijubane, isikhathi, nebanga."

Ungaphuthelwa!

Ngikweluleka ungalahlekelwa amaphuzu abalulekile kakhulu. Uma unikezwa umsebenzi, kufanele unake kulokho amayunithi banikwa nemingcele. Inkinga Umbhali kungaba bakopele. Uyabhala inikezwe:

Le ndoda waxosha eceleni komgwaqo ngebhayisikili 2 amakhilomitha emizuzwini engu-15. Ungagijimeli ngokushesha ukuxazulula inkinga besebenzisa ifomula, uma kungenjalo uthole lutho, wena uthisha ngeke ukubala. Khumbula ukuthi noma kunjalo akunakwenzeka ukwenza kanjalo: 2 km / 15 imiz. Uthola yokukala km / m, hhayi km / h. Udinga ukufeza yokugcina. Setha ngomzuzu ku iwashi. Indlela ukukwenza? imizuzu engu-15 -. Kuyinto 1/4 ihora noma amahora 0.25 can manje ngokuphepha 2km / 0,25ch = 8 km / h. Manje inkinga ixazululiwe kahle.

Yilokho kulula ukukhumbula ifomula "isivinini, isikhathi, nebanga." Vele ulandele yonke imithetho wezibalo, sinake amayunithi e inkinga. Uma kukhona umehluko wemisindo nemiqondo yamagama, efana kulesibonelo ngenhla nje, ngokushesha ukuhumusha SI amayunithi, njengoba kulindeleke.