Zvinhu zvinodonha zvakasununguka - matambudziko nemhinduro

Matambudziko Akagadziriswa Mukufamba Kwemutsetse - Zvinhu zvinodonha zvakasununguka

1. Chinhu chinodonha kubva pamusoro pegomo. Chinoonekwa chichirova pasi mushure memasekonzi matatu. Sarudza kumhanya kwacho usati warova pasi. Kukurumidza kwegiravhiti 10 m/s ² . Usakanganwa kudzivirira mvura.

Zvinozivikanwa:

Kumhanya kwekutanga (v _o ) = 0 (chinhu chadonhedzwa)

Nguva yepakati (t) = masekondi matatu

Kukurumidza kwegiravhiti (g) = 10 m/s ²

Zvinodiwa: Kumhanya kwekupedzisira (v _t )

Solution:

Kukurumidza kunokonzerwa negiravhiti pamusoro penyika, kukura kwayo i9.8 m/s ^2. Kuti zvive nyore kuverenga, tinoshandisa 10 m/s ².

10 m/s ² kana 10 m/s / 1 sekondi, zvinoreva kuti kumhanya kunowedzera zvakananga munguva ne10 m/s mukati mesekondi yega yega.

Mushure mesekondi imwe, kumhanya kwechinhu = 10 m/s

Mushure memasekonzi maviri, kumhanya kwechinhu = 20 m/s

Mushure memasekonzi matatu, kumhanya kwechinhu = 30 m/s.

Tinogona zvakare kushandisa kinematic equations pakufamba nekukasira nguva dzose , sezvakaratidzwa pazasi.

v _t = vo ₊ pa

s = vot ₊ ½ pa ²

v _t ² = v _o ² + 2 se

Kudonha kwakasununguka hakuna kumhanya kwekutanga (v _o = 0), saka equation iri pamusoro inogona kuchinjwa sezvakaratidzwa pazasi:

Equation yekufamba kwemahara :

v _t = gt ………… 1

h = ½ gt ² ………… 2

v _t ² = 2 gh ………….. 3

v _t = gt

v _t = (10)(3)

v _t = 30 m/s

Kumhanya kwekupedzisira i30 m/s

2. Mutumbi unodonha zvakasununguka kubva pakuzorora, kubva pakukwirira kwemamita makumi maviri nemashanu. Tsvaga (a) Kumhanya kwaunorova pasi. (b) Nguva yaunotora kusvika pasi.

Kukurumidza kunokonzerwa negiravhiti pamusoro pePasi ndeye 10 m/s ².

Zvinozivikanwa:

Kureba (h) = mamita mashanu

Kukurumidza kwegiravhiti (g) = 10 m/s ²

Zvaidiwa:

(a) Kumhanya kwekupedzisira (v _t )

(b) Nguva (t)

Solution:

Equation yemahara yekudonha:

v _t = gt

h = ½ gt ²

v _t ² = 2 gh

(a) Kumhanya kwekupedzisira (v _t )

v _t ² = 2 gh = 2(10)(5) = 100

v _t = 10 m/s

(b) Nguva (t)

h = ½ gt ²

5 = ½ (10) t ²

5 = 5 t ²

t ² = 5/5 = 1

t = sekondi imwe

3. Bhora rakadonha kubva pakakwirira. Tsvaga (a) Kukurumidza (b) Kureba mushure memasekonzi matatu (c) Nguva mumhepo kana kumhanya kwekupedzisira kuri 20 m/s. Kukurumidza kunokonzerwa negiravhiti = 10 m/s ²

Zvinozivikanwa :

Kukurumidza kwegiravhiti (g) = 10 m/s ²

Zvaidiwa:

(a) Kukurumidzisa (a)

(b) Kureba kana kureba (h) kana nguva yapfuura (t) = masekondi matatu

(c) Nguva (t) kana v _t = 20 m/s

Solution:

Equation yemahara yekudonha:

v _t = gt

h = ½ gt ²

v _t ² = 2 gh

(a) Kukurumidzisa (a)

Kukurumidzisa = kukurumidza kunokonzerwa negiravhiti = 10 m/s ^2. Zvinoreva kuwedzera kumhanya ne10 m/s pasekondi.

(b) Kureba kana kureba (h) mushure me t = masekondi matatu

h = ½ gt ² = ½ (10)(3) ² = (5)(9) = mamita makumi mana nemashanu

(c) Nguva yakapera (t) kana v _t = 20 m/s

v _t = gt

20 = (10) t

t = 20 / 10 = masekondi maviri

[wpdm_package id='511′]

[wpdm_package id='517′]

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