Imibuzo engu-8 mayelana nokuhamba okuqondile
1. Naka lesi sitatimende esilandelayo!
1. Abahamba ngezinyawo bawela ngendlela yokuwela i-zebra
2. Ikati lagijima lalandela igundane
3. Umango ovuthiwe uyawa esihlahleni
4. Ibhola lethenisi liyaqhunyiswa endizeni ethambekele
Isitatimende esingenhla esihlanganisa ukunyakaza okuqondile okusheshisiwe (GLBB) ...
A. 1 no-2
B. 1 no-3
C. 2 no-4
D. 3 no-4
Ingxoxo
Ukunyakaza okuqondile okusheshisiwe (GLBB) kuwukunyakaza okusheshisiwe njalo. Isibonelo, ekuqaleni into imile, ngemva komzuzwana owodwa into ihamba ngesivinini esingu-1 m/s, ngemva kwemizuzwana emibili into ihamba ngesivinini esingu-2 m/s, ngemva kwemizuzwana emi-3 into ihamba ngesivinini esingu-3 m/s. Ngakho ijubane lento likhuphuka ngo-1 m/s ngomzuzwana owodwa noma into ithola ukusheshiswa okungu-1 m/s 2 . Izibonelo zokunyakaza okuqondile okusheshisiwe okufanayo umango ovuthiwe owela esihlahleni kanye nebhola lethenisi eliqhunyiswa endizeni ethambekele.
Umango ovuthiwe owela esihlahleni uhlangabezana nokunyakaza kokuwa ngokukhululeka okusheshisa njalo kwamandla adonsela phansi angu-9,8 m/s2 . Lokhu kusho ukuthi ngemva komzuzwana owodwa, ijubane likamango likhuphuka ngo-9,8 m/s ngomzuzwana owodwa. Ngemva komzuzwana owodwa wokuwa, ijubane likamango liba ngu-9,8 m/s, ngemva kwemizuzwana emibili yokuwa ijubane likamango liba ngu-2 x 9,8 m/s = 19,6 m/s, njalo njalo.
Ibhola lethenisi eliqhutshelwa endizeni ethambekele nalo lizwa ukunyakaza okunokusheshisa okuqhubekayo kwamandla adonsela phansi, kodwa inani lokusheshisa lincane kune-9,8 m/s 2 ngoba lincike futhi ekuthambekeni kwebhodi.
Impendulo efanele ngu-D.
2. Lokhu okulandelayo yimiphumela yokuthayipha kwe-tickertimer kusukela ekuhlolweni kokunyakaza! Ukunyakaza okuqondile okufanayo kanye nokunyakaza okuqondile okusheshisiwe ngokufanayo kuboniswe ngokulandelana kunombolo yesibalo...
A. 1 no-2
B. 1 no-4
C. 2 no-3
D. 3 no-4
Ingxoxo
I-Tickertimer idala iphuzu elilodwa njalo ngomzuzwana owodwa ukuze kusukela kwelinye iphuzu kuya kwelinye kuthathe isikhathi esifanayo, okungukuthi umzuzwana owodwa.
Uma ibanga eliphakathi kwephuzu ngalinye lihlala lifana khona-ke ijubane lento lihlala lingaguquki (ukunyakaza okuqondile okufanayo).
Uma ibanga eliphakathi kwephuzu ngalinye liseduze, ijubane lento liba lincane (ukushintsha ukunyakaza okuqondile ngendlela efanayo kuyehliswa).
Uma ibanga eliphakathi kwephuzu ngalinye likude, ijubane lento liba likhulu (ukunyakaza okuqondile okusheshisiwe ngokulinganayo)
Ngokusekelwe esithombeni kanye nencazelo engenhla, kungaphethwa ngokuthi:
Umfanekiso 1: Ukunyakaza okuqondile okufanayo
Umfanekiso 2: Ukunyakaza okuqondile okusheshiswa ngokulinganayo
Umfanekiso 3: Ukunyakaza okuqondile okusheshisiwe ngokulinganayo nokusheshisiwe
Umfanekiso 4: Ukunyakaza okuqondile okusheshiswa ngokulinganayo
Ngakho-ke, ukunyakaza okuqondile okufanayo kuboniswe kumfanekiso 1 kanti ukunyakaza okuqondile okusheshisiwe okufanayo kuboniswe kumfanekiso 4.
Impendulo efanele ingu-B.
3. Naka imiphumela yesikhathi sethikha evela ekuhlolweni okungezansi! Yikuphi okuwukunyakaza okuqondile okusheshiswa ngokulinganayo?
Ingxoxo
I-Tickertimer idala iphuzu elilodwa njalo ngomzuzwana ukuze kusukela kwelinye iphuzu liye kwelinye kuthathe isikhathi esifanayo, okungukuthi umzuzwana owodwa.
Uma ibanga eliphakathi kwephuzu ngalinye lihlala lifana khona-ke ijubane lento lihlala lingaguquki (ukunyakaza okuqondile okufanayo).
Uma ibanga eliphakathi kwephuzu ngalinye liseduze, ijubane lento liba lincane (ukushintsha ukunyakaza okuqondile ngendlela efanayo kuyehliswa).
Uma ibanga eliphakathi kwephuzu ngalinye likude, ijubane lento liba likhulu (ukunyakaza okuqondile okusheshisiwe ngokulinganayo)
Ngokusekelwe esithombeni kanye nencazelo engenhla, kungaphethwa ngokuthi:
Umfanekiso A: Ukunyakaza okuqondile okusheshiswa ngokulinganayo
Umfanekiso B: Ukunyakaza okuqondile okusheshisiwe ngokulinganayo kuyehliswa ijubane, bese kusheshiswa.
Umfanekiso C: Ukunyakaza okuqondile okusheshiswa ngokulinganayo
Umfanekiso D: Ukunyakaza okuqondile okufanayo
Impendulo efanele ngu-A.
4. Ingane iqhubekela phambili emgwaqweni njengoba kuboniswe esithombeni esilandelayo ngaphandle kokugibela ibhayisikili layo.
Uhlobo lokunyakaza okuqondile okusheshisiwe (GLBB) okwenzeka ebhayisikilini uma lidlula endleleni...
Ingxoxo
AB = Ibhayisikili alisheleli ngoba liqhutshwa kodwa ngoba libhekana nokusheshisa okuqhubekayo kwamandla adonsela phansi. Ibhayisikili libhekana nokusheshisa okuqhubekayo kwamandla adonsela phansi, okusho ukuthi ijubane lalo liyanda njalo ngenxa yamandla adonsela phansi alidonsela phansi. Ngakho-ke lokhu kunyakaza kuyisibonelo sokunyakaza okuqondile okusheshisiwe (GLBB).
I-CD = Uma isuka ku-C iye ku-D, ibhayisikili liba nokwehla kwamandla adonsela phansi okuqhubekayo. Ukwehla kwamandla adonsela phansi okuqhubekayo kusho ukuthi ijubane lebhayisikili liyehla njalo ngenxa yamandla adonsela phansi alidonsela phansi. Ngakho-ke lokhu kunyakaza kuyisibonelo sokunyakaza okuqondile okusheshisiwe (GLBB) ngokusheshisa.
Impendulo efanele ngu-D.
5. Igrafu ekhombisa ubudlelwano phakathi kwebanga nesikhathi ngokunyakaza okuqondile okufanayo...
Ingxoxo
Incazelo yegrafu: s = ibanga, t = isikhathi
Impendulo efanele ngu-A.
6. Into ihamba amamitha angu-60 ngemizuzu emi-5. Bala ijubane lento ku-International System of Units!
Ingxoxo
Kuyaziwa ukuthi:
Uhlelo Lwamazwe Ngamazwe Lwezinyunithi zesikhathi luyimizuzwana, hhayi imizuzu, ngakho-ke imizuzu iguqulwa ibe yimizuzwana.
Isikhawu sesikhathi (t) = imizuzu emi-5 = 5 (imizuzwana engama-60) = imizuzwana engama-300
Ibanga (ama) = amamitha ayi-60
Kubuziwe: Isivinini (v)
Impendulo:
Ifomula yesivinini:
v = s/t
v = amamitha angu-60 / imizuzwana engu-300
v = 0,2 amamitha/umzuzwana
Ngakho-ke ijubane lento ku-International System of Units lingama-0,2 amamitha/umzuzwana. Imitha iyi-International System of Units yebanga, kanti eyesibili iyi-International System of Units yesikhathi.
7. Okulandelayo uhlobo lokunyakaza okuqondile okusheshiswa ngokulinganayo...
A. isitimela esihambayo
B. imoto epakiwe
C. abantu abaqhubeka nokugijima
D. amakhukhunathi awela ezihlahleni
Ingxoxo
Ukunyakaza okuqondile okusheshisiwe ngokulinganayo ukunyakaza okunesiqondiso esingaguquki ukuze indlela yokunyakaza iqonde futhi ijubane lento likhuphuke kancane kancane. Isibonelo, ijubane lento likhuphuka ngamamitha ama-2/umzuzwana njalo ngomzuzwana owodwa, bese kuthi ngemva kwemizuzwana emi-2, ijubane lento liba ngu-4 m/s, ngemva kwemizuzwana emi-3 ijubane lento liba ngu-6 m/s njalo njalo. Kulokhu, into kuthiwa ihlangabezana nokusheshisa okungaguquki okungu-2 m/s ngomzuzwana noma okungu-2 m/s 2.
A. Isitimela esihambayo sinejubane elishintshayo kanye nesiqondiso ukuze singafaki ukunyakaza okuqondile okufanayo
B. Imoto epakiwe ayibhekwa njengehambayo ngoba imoto ayimi.
C. Abantu abagijima kancane kancane, uma benesiqondiso esiqondile kanye nesivinini esiqondile, khona-ke bahamba ngendlela efanayo.
D. Isithelo sikakhukhunathi esiwa esihlahleni sinesiqondiso esiqondile futhi ijubane laso liyanda njalo ngokusheshisa ngenxa yamandla adonsela phansi angu-9,8 m/s 2 . Lokhu kusho ukuthi ijubane likakhukhunathi likhuphuka ngo-9,8 m/s njalo ngomzuzwana owodwa, ngemva kwemizuzwana emi-2 ijubane likakhukhunathi liba ngu-19,6 m/s, ngemva kwemizuzwana emi-3 ijubane likakhukhunathi liba ngu-29,4 m/s, njalo njalo.
Impendulo efanele ngu-D.
8. Naka izenzakalo ezilandelayo empilweni yansuku zonke!
1. Ibhola eligoqeka phansi endizeni ethambekile neshelelayo
2. Umuntu ugibela ibhayisikili ehla entabeni ngaphandle kokuligibela.
3. Ibhola le-baseball liphonswa phezulu lize lifike endaweni yalo ephezulu.
4. Ibhola le-ping pong ligingqika esihlabathini
Lo mcimbi, oyisibonelo se-GLBB esheshisiwe, uboniswa yinombolo…..
A. (1) kanye no-(2)
B. (1) kanye no-(3)
C. (2) kanye no-(4)
D. (3) kanye (4)
Ingxoxo
1. Ibhola eligoqeka phansi endizeni ethambekile neshelelayo
Lesi yisibonelo sokunyakaza okuqondile okusheshiswa ngokulinganayo, lapho ibhola ligoqeka phansi ngenxa yokusheshisa okungapheli kwamandla adonsela phansi.
2. Umuntu ugibela ibhayisikili ehla entabeni ngaphandle kokuligibela.
Lesi yisibonelo sokunyakaza okuqondile okusheshiswa ngokulinganayo, lapho ibhayisikili lihamba liye phansi ngenxa yokusheshisa okungapheli kwamandla adonsela phansi.
3. Ibhola le-baseball liphonswa phezulu lize lifike endaweni yalo ephezulu.
Lesi yisibonelo sokunyakaza okuqonde phezulu, lapho ibhola libhekana nokwehla kwamandla adonsela phansi okuqhubekayo. Lokhu kwehla kwamandla (isivinini esincishisiwe) kubangela ukuthi ibhola lime ekuphakameni kwalo okuphezulu ngaphambi kokuba libuyele ebusweni boMhlaba.
4. Ibhola le-ping pong ligingqika esihlabathini
Lesi akusona isibonelo sokunyakaza okuqondile okusheshiswa ngokulinganayo.
Impendulo efanele ngu-A.
