Matambudziko Akagadziriswa muKufamba Kwemutsetse - Kufamba Kwepasi mukuwa kwakasununguka
1. Bhora rinokandwa pasi rakamira nekumhanya kwekutanga kwe10 m/s uye rinosvika pasi mumasekonzi maviri. Tsvaga kumhanya kwekupedzisira bhora risati rasvika pasi. Kukurumidza kwegiravhiti (g) = 10 m/s 2 . Usafuratira kudzivirira mvura.
Zvinozivikanwa:
Kumhanya kwekutanga (v o ) = 10 m/s
Nguva yakapera (t) = masekondi maviri
Kukurumidza kwegiravhiti (g) = 10 m/s 2
Zvinodiwa: Kumhanya kwekupedzisira (v t )
Solution:
Kukurumidza 10 m/s 2 zvinoreva kuwedzera kumhanya ne10 m/s pasekondi. Mushure memasekonzi matatu, kumhanya = 30 m/s.
Kumhanya kwekupedzisira = 10 m/s + 20 m/s = 30 m/s.
Maequations eKinematic ekufambisa nekumhanya nguva dzose , sezvakaratidzwa pazasi:
v t = vo + pa ………. 1
h = vot + ½ pa 2 ……. 2
v t 2 = v o 2 + 2 ah ………. 3
v t = vo o + g t
v t = 10 + (10)(2)
v t = 10 + 20 = 30 m/s
Kumhanya kwekupedzisira = v t = 30 m/s
[irp]
2. Dombo rinokandwa pasi rakamira kubva pabhiriji nekumhanya kwekutanga kwe5 m/s uye rinosvika mumvura mumasekonzi maviri. Verenga kukwirira kwebhiriji.
Zvinozivikanwa:
Kumhanya kwekutanga (v o ) = 5 m/s
Nguva yakapera (t) = masekondi maviri
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s 2
Zvinodiwa: kureba kwebhiriji (h)
Solution:
h = vot + ½ gt 2
h = (5)(2) + ½ (10)(2) 2
h = 10 + (5)(4)
h = 10 + 20
h = mamita mashanu
[irp]
3. Bhora rinokandwa rakamira pasi nekumhanya kwekutanga kwe10 m/s kubva pakukwirira kwemamita 80. Tsvaga (a) Nguva mumhepo (b) Kumhanya kwekupedzisira bhora risati rarova pasi.
Zvinozivikanwa:
kukwirira (h) = mamita makumi masere
Kumhanya kwekutanga (v o ) = 10 m/s
Kukurumidza kwegiravhiti (g) = 10 m/s 2
Zvaidiwa:
(a) Nguva (t)
(b) Kumhanya kwekupedzisira (v t )
Solution:
(a) Nguva (t)
Kumhanya kwekupedzisira:
v t 2 = v o 2 + 2 gh
v t 2 = (10) 2 + 2(10)(80) = 100 + 1600 = 1700
v t = 41 m/s
Nguva yepakati (t):
v t = vo o + g t
41 = 10 + (10)(t)
41 - 10 = 10 t
31 = 10 t
t = 31 / 10 = masekondi maviri
(b) Kumhanya kwekupedzisira (v t )?
v t = 41 m/s
[irp]
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