Isivinini esimaphakathi - izinkinga nezixazululo
1. Umuntu uzungeza unxande onobude obungamamitha angu-400 nobubanzi obungamamitha ayi-100, izikhathi ezingu-12 ngehora eli-1. Iyini ijubane elimaphakathi kanye nejubane elimaphakathi?
Kwaziwa:
Ubude besikwele = amamitha angu-400
Ububanzi besikwele = amamitha ayi-100
Ukujikeleza kwesikwele = (2 x 400 amamitha) + (2 x 100 amamitha) = amamitha angu-800 + amamitha angu-200 = amamitha ayi-1000
Ibanga = 12 x 1000 amamitha = 12,000 amamitha = 12 amakhilomitha
Kufunwa: Ijubane elimaphakathi kanye nejubane elimaphakathi
Isixazululo:
Ijubane elimaphakathi:
Umuntu ubuyela esivinini sokuqala ngemva kokujikeleza okungunxande, ngakho-ke ukufuduka komuntu kungu-0 kanti isivinini esimaphakathi singu-0.
Isivinini esimaphakathi:
Isivinini esimaphakathi = ibanga eliphelele / isikhawu sesikhathi = 12 km / ihora eli-1 = 12 km/ihora
2. Ukuxhumana phakathi kwebanga (d) kanye nesikhawu sesikhathi (t) sento ehambayo kuboniswe esithombeni esingezansi. Uma ibanga lingamamitha nesikhathi singamasekhondi, liyini ijubane elimaphakathi.
Isixazululo
Isivinini esimaphakathi = ibanga / isikhawu sesikhathi
Ijubane elimaphakathi = amamitha ayi-15 / imizuzwana eyi-6 = amamitha ayi-2.5/umzuzwana
3. Inyoni indizela eNyakatho ngesivinini esingu-16 m/s ngemizuzwana emi-5 bese indiza ibheke eMpumalanga ngesivinini esingu-12 m/s ngemizuzwana emi-5. Iyini ijubane elimaphakathi lemizuzwana eyi-10?
Isixazululo:
Ijubane lenyoni eliya enyakatho: amamitha ayi-16/umzuzwana = amamitha ayi-16/umzuzwana o-1
Ngemva komzuzwana owodwa, inyoni inyakaza ize ifike kumamitha ayi-16
Ngemva kwemizuzwana emibili, inyoni iqhubekela phambili kuze kufike kumamitha angu-2 x 16 = 32
Ngemva kwemizuzwana emibili, inyoni iqhubekela phambili kuze kufike kumamitha angu-5 x 16 = 80
Ijubane lenyoni eliya empumalanga: amamitha ayi-12/umzuzwana = amamitha ayi-12/umzuzwana o-1
Ngemva komzuzwana owodwa, inyoni inyakaza ibanga elingafika kumamitha ayi-12
Ngemva kwemizuzwana emibili, inyoni iqhubekela phambili kuze kufike kumamitha angu-2 x 12 = 24
Ngemva kwemizuzwana emibili, inyoni iqhubekela phambili kuze kufike kumamitha angu-5 x 12 = 60
Ukufuduka (aba) :
s = √802 60 +2
s = √6400 + 3600
s = √10,000
s = amamitha ayi-100
Ijubane elimaphakathi (v):
v= Ukuhambisa / isikhathi
v = amamitha ayi-100 / imizuzwana eyi-10
v = amamitha ayi-10/umzuzwana
1. Umbuzo: Iyini ijubane elimaphakathi? Impendulo: Ijubane elimaphakathi liwukufuduka okuphelele kwento okuhlukaniswe yisikhathi esiphelele esithathiwe. Liyinani levektha futhi linobukhulu kanye nesiqondiso.
2. Umbuzo: Ijubane elimaphakathi lihluke kanjani kwijubane elimaphakathi? Impendulo: Ijubane elimaphakathi liyibanga eliphelele elihanjiwe elihlukaniswe yisikhathi esiphelele esithathiwe, futhi alicabangi ngokuqondisa. Ijubane elimaphakathi, ngakolunye uhlangothi, libheka ukufuduka okuphelele (ushintsho endaweni) kanye nokuqondisa kwayo.
3. Umbuzo: Uma imoto ihamba amakhilomitha angu-200 enyakatho bese isuka kumakhilomitha angu-200 eningizimu emahoreni angu-8, iyini ijubane layo elijwayelekile? Impendulo: Imoto ibuyela endaweni yayo yokuqala, ngakho-ke ukuhamba kwayo okuphelele kungu-0 km. Ngakho-ke, ijubane layo elimaphakathi lingu- .
4. Umbuzo: Ingabe ijubane elimaphakathi lingaba negative? Impendulo: Yebo, ijubane elimaphakathi lingaba negative, kuye ngokuthi isiqondiso sikhethiwe. Uma into ihamba ngendlela ephambene nereferensi, ijubane layo elimaphakathi lizoba negative.
5. Umbuzo: Kungani ijubane elimaphakathi liyinani le-vector? Impendulo: Ijubane elimaphakathi liyinani levektha ngoba linobukhulu (ukuthi into ihamba ngokushesha kangakanani) kanye nesiqondiso (ukuthi into ihamba ngakuphi).
6. Umbuzo: Uma igrafu yesikhathi sokufuduka kwento ingumugqa oqondile, ungathini ngejubane layo elimaphakathi? Impendulo: Uma igrafu yesikhathi sokuhamba ibanga ingumugqa oqondile, into inejubane elingaguquki, futhi ijubane layo elimaphakathi kunoma yisiphi isikhathi lizofana nejubane layo elisheshayo kunoma yisiphi isikhathi esinikeziwe.
7. Umbuzo: Ingabe ubukhulu bejubane elimaphakathi bungaba bukhulu kunejubane elimaphakathi? Impendulo: Cha, ubukhulu bejubane elimaphakathi abukwazi ukudlula ijubane elimaphakathi. Okungenani, zingalingana uma indlela yento kanye nesiqondiso sokunyakaza kwayo kuvumelana.
8. Umbuzo: Ubala kanjani ijubane elimaphakathi kusuka kugrafu yejubane nesikhathi? Impendulo: Ijubane elimaphakathi elivela kugrafu yejubane nesikhathi lingatholakala ngokubala indawo engaphansi kwegrafu (noma phakathi kwegrafu ne-x-axis) bese uyihlukanisa ngesikhawu sesikhathi esiphelele.
9. Umbuzo: Kusho ukuthini uma into inejubane elimaphakathi lika-zero? Impendulo: Uma into inejubane elimaphakathi elingu-zero, kusho ukuthi izikhundla zayo zokuqala nezokugcina ziyafana phakathi nesikhathi esicatshangelwayo, noma ngabe inyakaze phakathi naleso sikhathi.
