Kufamba nekumhanya kunogara kuripo - matambudziko nemhinduro

Matambudziko Akagadziriswa muKufamba Kwemutsetse - Kumhanya kunogara kuripo

1. Mota inofamba ne10 m/s isingachinji. Sarudza mufambo mushure memasekonzi gumi nemasekonzi makumi matanhatu.

mhinduro

Kumhanya kwakasimba kwemamita gumi pasekondi zvinoreva kuti mota inofamba mamita gumi pasekondi imwe chete yega yega.

Mushure memasekonzi maviri, mota inofamba mamita makumi maviri,

Mushure memasekonzi maviri, mota inofamba mamita makumi maviri,

Mushure memasekonzi gumi, mota inofamba mamita zana,

Mushure memasekonzi gumi, mota inofamba mamita zana.

2. Mota inofamba mumugwagwa wakatwasuka ichimhanya 72 km/awa. Sarudza daro remota mushure memaminitsi maviri nemaminitsi mashanu.

mhinduro

72 km/awa = (72)(mamita chiuru) / 3600 masekondi = 72,000 / 3600 masekondi = 20 mamita/sekondi.

Kumhanya kwakasimba kwemamita makumi maviri pasekondi zvinoreva kuti mota inofamba mamita makumi maviri pasekondi imwe chete.

Mushure memasekonzi zana nemakumi maviri kana maminitsi maviri, mota inofamba 20 metres x 120 = 2400 metres,

Mushure memasekonzi zana nemakumi maviri kana maminitsi maviri, mota inofamba 20 metres x 300 = 6000 metres.

3. Muviri unofamba mumugwagwa wakatwasuka kwemamita zana mumasekondi makumi mashanu. Sarudza kumhanya kwemuviri.

mhinduro

Mamita zana / masekondi makumi mashanu = mamita gumi / masekondi mashanu = mamita maviri/sekondi.

4. Sarudza kumhanya zvichienderana nedhayagiramu iri pazasi….

mhinduro

Kumhanya = Kureba / nguva yapfuura

Kumhanya = mamita maviri / sekondi imwe = mamita mana / masekonzi maviri = mamita matanhatu / masekonzi matatu = mamita masere / masekonzi mana = mamita maviri/sekondi.

5. Mota A neB dzinosangana munzira dzakafanana. Kana daro riri pakati pemota mbiri iri 100 metres, mota A inofamba nekumhanya kwakafanana kwe10 m/s, mota B inofamba nekumhanya kwakafanana kwe40 m/s. Sarudza (a) daro remota A usati wapfuura mota B (b) nguva isati yasvika mota B isati yapfuura mota A.

mhinduro

Mota A inofamba nekumhanya kwakasimba kwemamita gumi pasekondi, zvichireva kuti mota A inofamba kusvika pamamita gumi pasekondi imwe chete. Mushure memasekonzi maviri, mota inofamba kusvika pamamita makumi maviri.

Mota B inofamba nekumhanya kwakasimba kwemamita makumi mana pasekondi, zvichireva kuti mota B inofamba kusvika pamamita makumi mana pasekondi imwe chete. Mushure memasekonzi maviri, mota B inofamba kusvika pamamita makumi masere.

Mamita makumi maviri + mamita makumi masere = mamita zana.

(a) Kureba kwemota A isati yapfuura B ndeyemamita makumi maviri. Kureba kwemota B isati yapfuura A ndeyemamita makumi masere.

(b) Nguva yenguva yemotokari B isati yapfuura mota A masekondi maviri. Nguva yenguva yemotokari A isati yapfuura mota B masekondi maviri

5. Kana speedometer yemotokari inoratidza kumhanya kwe108 km/awa, sarudza daro rinofambwa nemotokari muminiti imwe chete.

Solution:

Chinoyera kumhanya kwemotokari. Kumhanya kwemotokari i108 km/awa.
108 km / h = (108) (mamita 1000) / 3600 masekondi = 30 mamita/sekondi.

Miniti imwe = masekondi makumi matanhatu

Kumhanya kwemota kwemamita makumi matatu pasekondi zvinoreva kuti mota inofamba kusvika pamamita makumi matatu pasekondi imwe chete.

Mushure mesekondi imwe chete, mota inofambira kure kusvika pamamita 1 x 30 = mamita 30.

Mushure memasekonzi maviri, mota inofambira kure kusvika pamamita maviri x makumi matatu = mamita makumi matanhatu.

Mushure memasekonzi maviri, mota inofambira kure kusvika pamamita maviri x makumi matatu = mamita makumi matanhatu.

6. Tom kukanda a bhora rakatwasuka kuna Andrew. Tom naAndrew ndivo yakaparadzaniswa kusvika pa10.08 metersBhora rinokandwa yakatwasuka uye mafambiro at 20 m/s (kusateerera simba rinokwevera pasi). Andrew rovas bhora 4.00 x 10^-3 masekondi mushure mekunge bhora rakaraswa. Kana murovi kufamba nguva dzose havukavu ye5.00 m/s, bhora rinorohwa ne murovi Shure kwe murovi anosvika padanho rekuti…

Zvinozivikanwa:

Daro riri pakati paTom naAndrew = mamita gumi nesere (10.08 metres)

Kumhanya kwebhora (v) = 20 m/s

Nguva yenguva (t) = 4 x 10^-3 masekondi = 0.004 masekondi

Kumhanya kwemurovi (v) = 5 m / s

Kuda: Bhora rinorohwa neanorova mushure mekunge bhora rafamba kusvika…

Solution:

Kureba kwebhora:

s₁ = vt = (20)(0.004) = 0.08 mamita

Kureba kwemurovi:

s₂ = vt = 5 t

Kureba kwebhora + kureba kwemurovi = kureba pakati paTom naAndrew.

0.08 + 5 t = 10.08

5 t = 10.08 – 0.08

5 t = 10

t = 10 / 5

t = masekondi maviri

Kureba kwemurovi:

s₂ = vt = 5 t = (5) (2) = mamita gumi

7. Muvhimi nemotokari yake ari kudzingirira mhembwe. Mota yacho inofamba ne72 km/h uye mhembwe inomhanya nekumhanya kwe64.8 km/h. Kana daro riri pakati pemotokari nemhembwe riri 2012 metres, muvhimi akapfura pfuti yake. Mabara anobuda mupfuti pa200 m/s. Sarudza nguva iyo mhembwe iri kupfurwa.

A. 0.5 s

B. 1 s

C. 1.25 s

D. 1.5 s

Zvinozivikanwa:

Kumhanya kwemotokari (v)_b) = 72 km/h = (72)(1000 m) / 3600 s = 20 m/s

Kumhanya kwemhembwe (v)_r) = 64.8 km/h = (64.8)(1000 m) / 3600 s = 64800 m / 3600 s = 18 m/s

Kana bara rapfurwa, daro riri pakati pemotokari nemhembwe (s) = mamita mazana maviri nemaviri

Kumhanya kwemoto (v)_p) = 20 m/s + 200 m/s = 220 m/s

Zvombo zvinobatwa nevavhimi vari mumotokari inofamba nekumhanya kwe20 m/s kuitira kuti kumhanya kwemotokari kuwedzerewo pakumhanya kwebara.

Kuda: Sarudza nguva iyo mhara iri kupfurwa

Solution:

Funga nezvemota nemhara zvichifamba nekumhanya kwakasimba.

Equation: v = s / t kana s = vt

v = kumhanya, s = daro, t = nguva pakati

Kureba = 202 + X_r = 202 + v_r t = 202 + 18 t

Kureba = Y_p =v_p t = 220 t

Kureba kwakafambwa nemhembwe = kureba kwakafambwa nebara

202 + 18 t = 220 t

202 = 220 t – 18 t

202 = 202 t

t = 202 / 202

t = sekondi imwe

Mhinduro chaiyo ndeiyi B.

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1. Kureba uye kutama
2. Avhareji yekumhanya uye avhareji yekumhanya
3. Kumhanya kunogara kuripo
4. Kukurumidza nguva dzose
5. Kufamba kwemahara kwekudonha
6. Kufamba pasi mukudonha kwakasununguka
7. Kufamba kumusoro nekudzika mukudonha kwakasununguka