Izibonelo zemibuzo efanayo yokunyakaza okuqondile

Izibonelo Ezi-7 Zezinkinga Zokunyakaza Okulinganayo Okuqondile

1. Isithuthuthu sihamba emgqeni oqondile ngesivinini esingaguquki esingu-10 m/s. Thola ibanga elihanjwe yisithuthuthu ngemva kwemizuzwana eyi-10 nemizuzwana engama-60.

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Isivinini esingaguquki = 10 m/s noma amamitha ayi-10 ngomzuzwana kusho ukuthi isithuthuthu sihamba amamitha ayi-10 njalo ngomzuzwana.
Ngemva kwemizuzwana emi-2, isithuthuthu sihamba amamitha angama-20,
Ngemva kwemizuzwana emi-5, isithuthuthu sihamba amamitha angama-50,
Ngemva kwemizuzwana engama-10, isithuthuthu sihamba amamitha angama-100.,
Ngemva kwemizuzwana engama-60, isithuthuthu sihamba amamitha angama-600..

2. Imoto ihamba emgqeni oqondile ngesivinini esingaguquki samakhilomitha angu-72 ngehora. Nquma ibanga elihanjwa yimoto ngemva kokuhamba imizuzu emi-2 nemizuzu engu-5.

Ingxoxo
72 km/h = (72)(amamitha ayi-1000) / imizuzwana engu-3600 = 72000 / imizuzwana engu-3600 = amamitha angu-20/umzuzwana.
Ijubane elingaguquki lamamitha angu-20 ngomzuzwana lisho ukuthi imoto ihamba amamitha angu-20 njalo ngomzuzwana owodwa.
Ngemva kwemizuzwana engama-120 noma imizuzu emi-2, isithuthuthu sihamba ibanga elingamamitha angu-(20)(120) = 2400,
Ngemva kwemizuzwana engama-300 noma imizuzu emi-5, isithuthuthu sihamba ibanga elingamamitha angu-(20)(300) = 6000.

3. Into ihamba ngomugqa oqondile ngamamitha angu-100 njalo ngemizuzwana engu-50. Thola ijubane lento!

Ingxoxo
Amamitha ayi-100 / imizuzwana engama-50 = amamitha ayi-10 / imizuzwana emi-5 = amamitha ama-2/umzuzwana.

4. Isivinini sokunyakaza kwento ngokusekelwe kugrafu engezansi sithi….
Ingxoxo

Isivinini = ibanga / isikhathi
Isivinini = amamitha ama-2 / umzuzwana o-1 = amamitha ama-4 / imizuzwana emi-2 = amamitha ayi-6 / imizuzwana emi-3 = amamitha ayi-8 / imizuzwana emi-4 = amamitha ama-2 ngomzuzwana.

5. Izimoto u-A no-B ziyasondelana ngesivinini esingaguquki endleleni eqondile. Uma ibanga eliphakathi kwezimoto ezimbili lingamamitha angu-100, imoto u-A ihamba ngesivinini esingaguquki esingu-10 m/s, imoto u-B ihamba ngesivinini esingaguquki esingu-40 m/s. Thola (a) ibanga elihanjwe yimoto u-A ngaphambi nje kokudlula imoto u-B (b) isikhathi esihanjwe yimoto u-B ngaphambi kokudlula imoto u-A.

Ingxoxo
Imoto A ihamba ngesivinini esingaguquki samamitha ayi-10 ngomzuzwana, okusho ukuthi imoto A ihamba amamitha ayi-10 njalo ngomzuzwana. Ngemva kwemizuzwana emi-2, imoto A inyakaza ibanga Imitha ye-20.
Imoto B ihamba ngesivinini esingaguquki samamitha angu-40 ngomzuzwana, okusho ukuthi imoto A ihamba amamitha angu-40 njalo ngomzuzwana. Ngemva kwemizuzwana emi-2, imoto B inyakaza ibanga Imitha ye-80.
Amamitha angu-20 + amamitha angu-80 = amamitha angu-100.
(a) Ibanga elihanjwa yimoto A ngaphambi kokudlula imoto B liyi Imitha ye-20Ibanga elihanjwa yimoto B ngaphambi kokudlula imoto A liyi Imitha ye-80.
(b) Isikhathi esinqunyiwe semoto B ngaphambi kokudlula imoto A Imizuzwana emi-2Isikhathi esiphakathi kwemoto A nemoto B singu Imizuzwana emi-2

6. Ithebula elilandelayo liqukethe ibanga nesikhathi sokuhamba kwento!

Umfundi wenze isivivinyo sokunyakaza kwezinto ezimbili kathathu, njengoba kuboniswe kuthebula elingenhla. Uhlobo lokunyakaza olwenzeka ezintweni 1 no-2, ngokulandelana, lwaluyi...

A. I-GLB kanye ne-GLBB ziyehliswa ijubane

B. I-GLB esheshisiwe kanye ne-GLBB

C. I-GLBB ne-GLB esheshisiwe

D. I-GLBB kanye ne-GLB enciphile

Ingxoxo

Into 1:

v = s/t

Incazelo: v = isivinini, s = ibanga, t = isikhathi

v = 60/15 = 4 cm/s

v = 80/20 = 4 cm/s

v = 100/25 = 4 cm/s

Isivinini sento esingaguquki = ukunyakaza okuqondile okufanayo (i-GLB).

Into 2:

v = s/t

Incazelo: v = isivinini, s = ibanga, t = isikhathi

v = 4/2 = 2 cm/s

v = 9/3 = 3 cm/s

v = 25/5 = 5 cm/s

Ijubane lento liyakhula = ukunyakaza okuqondile okusheshisiwe okulinganayo (GLBB).

Impendulo efanele ingu-B.

7. Umzingeli emotweni yakhe uxosha inyamazane. Imoto ihamba ngesivinini esingamakhilomitha angama-72 ngehora kanti inyamazane igijima ngesivinini esingamakhilomitha angama-64,8 ngehora. Uma ibanga eliphakathi kwemoto nenyamazane lingama-202 m, umzingeli udubula isibhamu sakhe. Inhlamvu iphuma emgqonyeni wesibhamu ngesivinini esingama-200 m/s ibhekene nomgqomo wesibhamu. Inhlamvu ishaya inyamazane ngemva kwesikhathi esingama-….

1. Imizuzwana emi-0,5
2. Imizuzwana emi-1
3. Imizuzwana emi-1,25
4. Imizuzwana emi-1,5

Ingxoxo
Kuyaziwa ukuthi:
Isivinini semoto (v)_b) = 72 km/h = (72)(1000 m) / 3600 s = 20 m/s
Isivinini senyamazane (v)_r) = 64,8 km/h = (64,8)(1000 m) / 3600 s = 64800 m / 3600 s = 18 m/s
Uma isibhamu sidubula, ibanga eliphakathi kwemoto nezinyamazane = amamitha angu-202
Isivinini senhlamvu (v)_p) = 20 m/s + 200 m/s = 220 m/s
Isibhamu siphethwe ngumzingeli osemotweni ohamba ngesivinini esingama-20 m/s ukuze isivinini senhlamvu siphinde sengezwe esivinini semoto.
Kubuziwe: Inhlamvu yashaya inyamazane ngemva kokudlula kwesikhathi….
Impendulo:
Ake sithi imoto kanye nenyamazane zihamba ngendlela eqondile ngesivinini esingaguquki.
Ifomula yesivinini: v = s / t noma s = vt
Incazelo yefomula: v = isivinini, s = ibanga, t = isikhathi

Ibanga elihanjwa yinyamazane = 202 + X_r = 202 + v_r t = 202 + 18 t
Ibanga lenhlamvu = Y_p =v_p t = 220 t

Uma inhlamvu ishaya inyamazane, ibanga elihanjwe yinhlamvu = ibanga elihanjwe yinyamazane.
Ibanga lokuhamba kwenyamazane = Ibanga lokuhamba ngezinhlamvu
202 + 18 t = 220 t
202 = 220 t – 18 t
202 = 202 t
t = 202 / 202
t = imizuzwana emi-1
Impendulo efanele ingu-B.

 

Imibuzo efanayo yokunyakaza okuqondile

1. Isithuthuthu sihamba emgqeni oqondile ngesivinini esingaguquki esingu-12 m/s. Thola ibanga elihanjwe yisithuthuthu ngemva kwemizuzwana eyi-4 nemizuzwana engama-7.
2. Imoto ihamba emgqeni oqondile ngesivinini esingaguquki samakhilomitha angu-36 ngehora. Nquma ibanga elihanjwa yimoto ngemva kokuhamba imizuzu emi-3 nemizuzu engu-8.
3. Into ihamba ngomugqa oqondile ngamamitha angu-200 njalo ngemizuzwana engu-50. Thola ijubane lento!
4. Isivinini sokunyakaza kwento ngokusekelwe kugrafu engezansi sithi….

5. Izimoto u-A no-B ziyasondelana ngesivinini esingaguquki endleleni eqondile. Uma ibanga eliphakathi kwezimoto ezimbili lingamamitha angu-120, imoto u-A ihamba ngesivinini esingaguquki esingu-20 m/s, imoto u-B ihamba ngesivinini esingaguquki esingu-40 m/s. Thola (a) ibanga elihanjwe yimoto u-A ngaphambi nje kokudlula imoto u-B (b) isikhathi esihanjwe yimoto u-B ngaphambi kokudlula imoto u-A.

[IsiNgisi: Isivinini esiqhubekayo – izinkinga nezixazululo ]