Dongosolo la "Liwiro, nthawi, mtunda." Kodi kuthetsa vutolo?

Tiyeni sukulu sayansi phunziro inasanduka masewera zosangalatsa! M'nkhaniyi, heroine athu adzakhala chilinganizo cha "Liwiro, nthawi, mtunda." Pendani payokha lililonse chizindikiro, ife azipereka zitsanzo zosangalatsa.

liwiro

ndi "liwiro" n'chiyani? Mungathe kuona galimoto imodzi amasiya msanga, pomwe wina pang'onopang'ono; munthu wina akulankhula mofulumira, wina - osati mwachangu. Njinga komanso kuyenda pa liwiro osiyana. Inde! Kuti mlingo. Kodi zikutanthauzanji izo? Kumene, mtunda kuti anali munthu. Ine ankayendetsa galimoto ena nthawi yeniyeni. Kuganiza kuti munthu liwiro 5 km / h. Kuti ndi 1 ola limodzi, iye anali makilomita 5.

Kodi kupeza liwiro, nthawi, mtunda? Tiyeni tiyambe ndi liwiro. Kuyang'anitsitsa, chimene anayeza? Mwachibadwa, Km / h m / s. Pali mayunitsi ena, mwachitsanzo, Km / s (danga), mamilimita / h (mu sayansi). Samalani zimene waima patsogolo pa "/" chizindikiro ndi pambuyo. Choyamba, kumatanthauza "mpukutu", kutanthauza kuti numerator - mm, mtunda, m, mu chimene chachititsa wa - H, S, min. Chachiwiri, zikuoneka izi amatikumbutsa kachitidwe, sichoncho? Makilomita, mamita - mtunda, kutalika, ndipo nthawi yachiwiri, miniti - nthawi. Chotero kwa nsonga ya. Kunali kosavuta kuti kumbukirani momwe kupeza liwiro, yang'anani palibe wagawo (km / h, m / s). Mawu okha:

ndime = S / T = km / h.

nthawi

Kodi nthawi? Ndithudi, izo zimatengera liwiro la. Mwachitsanzo, mukuyembekezera pakhomo la nyumba mayi ndiponso mchimwene. Iwo kuchoka sitolo. M'bale anabwera kale kwambiri. Amayi anali kudikira za 5 Mphindi chiyani? Chifukwa iwo anali pa mlingo wosiyana. Kumene, mofulumira kumaloku, muyenera kuwonjezera liwiro kuti imathandizira kusuntha kwa amaumiriza "mpweya" mu galimoto kwambiri, kuti omwazika pa njinga. Only pamene liwiro, samalani ndi maso kuti kwerani munthu kapena chinachake.

Kodi kupeza nthawi? Tili ndi nsonga liwiro - km / h. Ndipo mmene kukhala ndi nthawi? Choyamba, nthawi amayezedwa Mphindi, masekondi, maola. Dongosolo la "liwiro, nthawi, mtunda" likamadzakonzedwa motere:

nthawi T [gawo., min., hr] = S [m, mm, mtunda] / m [m / s, mamilimita / Mph, Km / h].

Ngati inu atembenuke nusu ya malamulo onse a masamu, kufupikitsa mtunda chizindikiro (kutalika), ikhala okha kachiwiri, mphindi imodzi kapena ola.

Distance, njira kutalika anayendayenda

Apa kudzakhala kosavuta kuyenda, m'pamenenso, ziziyenda amene ulendo odometer mu galimoto. Iwo adzakhala kudziwa makilomita anayenda ambiri, komanso kudziwa liwiro la. Koma monga kayendedwe ka m'goli, khalani tonoe kusuntha sachiza, ngati ife timatenga liwiro pafupifupi.

Chilinganizo njira (mtunda) - mankhwala a mathamangidwe ndi nthawi. Inde, yabwino ndi yotsika mtengo njira - ndi nthawi. Koloko ndi pa onse. oyenda sikukudziwika mosamalitsa 5 Km / h, ndipo pafupifupi. Choncho, pangakhale vuto. Zikatero, inu kulibwino kutenga mapu a m'derali. Taonani zimene lonse. Kuyenera anasonyeza bwanji makilomita kapena mamita mu 1 cm ambiri. Angagwirizanitse mkulu ndi kuyeza kutalika. Mwachitsanzo, kuchokera kunyumba nyimbo sukulu molunjika msewu. Gawo A chasanduka 5 cm pamlingo anasonyeza 1 cm = 200 mamita zikutanthauza kuti mtunda weniweni - .. 200 * 5 = 1000 mamita = 1 Km. Kuchuluka kwa momwe inu kupita patali? Kwa theka la ola? Mwaukadaulo kulankhula, 30 = 0.5 Mph H = (1/2) maola. Ngati ife vutolo, likukhalira kuti tipite pa liwiro la 2 Km / h. Nthawi zonse kudzakuthandizani kuthetsa njira "liwiro, nthawi, mtunda."

Musati muphonye!

Ine ndikulangizeni inu kuti muphonye mfundo zofunika kwambiri. Pamene mwapatsidwa ntchito, akhale tcheru zimene mayunitsi amapatsidwa magawo. Vuto Author akhoza chinyengo. Iye akulemba pa anapatsidwa:

munthu nkhosa panjira pa njinga makilomita 2 mphindi 15. Musawafulumizitse yomweyo kuthetsa vutolo pogwiritsa ntchito njira, mukatero kupeza kanthu, inu ndi mphunzitsi izo si zoona. Kumbukirani kuti Mulimonsemo n'zosatheka kutero: 2 km / 15. Tatengani unit wa muyeso km / m, osati km / h. Muyenera kukwaniritsa otsiriza. Ikani miniti mu koloko. Kodi kuchita izo? Mphindi 15 -. Ndi ora 1/4 kapena maola 0,25 tsopano mukhoza bwinobwino 2km / 0,25ch = 8 Km / h. Tsopano vuto wakhala anathana molondola.

Ndicho saiwalika chilinganizo "liwiro, nthawi, mtunda." Mongotsatila malamulo a masamu, kulabadira mayunitsi mu vuto. Ngati pali mfundo zina zabwino, monga mwa chitsanzo pamwamba chabe pamwamba, pomwepo kumasulira mu mayunitsi SI, monga momwe anali kuyembekezera.