Zinthu zomwe zimagwa momasuka - mavuto ndi mayankho

Mavuto Othetsedwa mu Kuyenda Molunjika - Zinthu zomwe zimagwa momasuka

1. Chinthu chogwa kuchokera pamwamba pa phiri. Chimawoneka kuti chagunda pansi pa masekondi atatu. Dziwani liwiro lake musanagunde pansi. Kuthamanga kwa mphamvu yokoka ndi 10 m/s ² . Musanyalanyaze kukana madzi.

Zodziwika:

Liwiro loyambirira (v _o ) = 0 (chinthu chatsitsidwa)

Nthawi yopuma (t) = masekondi atatu

Kuthamanga kwa mphamvu yokoka (g) = 10 m/s ²

Kufunidwa: Liwiro lomaliza (v _t )

Yankho:

Kuthamanga chifukwa cha mphamvu yokoka pamwamba pa dziko lapansi, kukula kwake ndi 9.8 m/s ^2. Kuti kuwerengera kukhale kosavuta, timagwiritsa ntchito 10 m/s ².

10 m/s ² kapena 10 m/s / 1 sekondi, zikutanthauza kuti liwiro limawonjezeka molunjika munthawi ndi 10 m/s pa sekondi iliyonse.

Pambuyo pa sekondi imodzi, liwiro la chinthu = 10 m/s

Pambuyo pa masekondi awiri, liwiro la chinthucho = 20 m/s

Pambuyo pa masekondi atatu, liwiro la chinthucho = 30 m/s.

Tingagwiritsenso ntchito ma equation a kinematic poyenda mothamanga nthawi zonse , monga momwe tawonetsera pansipa.

v _t = vo ₊ pa

s = vot ₊ ½ pa ²

v _t ² = v _o ² + 2 monga

Kugwa kwaulere kulibe liwiro loyambirira (v _o = 0), kotero equation yomwe ili pamwambapa ikhoza kusinthidwa monga momwe tawonetsera pansipa:

Chiyerekezo cha kuyenda kogwa kwaulere :

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

Liwiro lomaliza ndi 30 m/s

[irp]

2. Thupi limagwa momasuka kuchokera pamalo opumula, kuchokera kutalika kwa mamita 25. Pezani (a) Liwiro lomwe limagunda pansi. (b) Nthawi yomwe imatenga kuti lifike pansi.

Kuthamanga chifukwa cha mphamvu yokoka pamwamba pa Dziko Lapansi ndi 10 m/s ².

Zodziwika:

Kutalika (h) = mamita 5

Kuthamanga kwa mphamvu yokoka (g) = 10 m/s ²

Akufuna:

(a) Liwiro lomaliza (v _t )

(b) Nthawi yopuma (t)

Yankho:

Chiyerekezo cha kugwa kwaulere:

v _t = gt

h = ½ gt ²

v _t ² = 2 gh

(a) Liwiro lomaliza (v _t )

v _t ² = 2 gh = 2(10)(5) = 100

v _t = 10 m/s

(b) Nthawi yopuma (t)

h = ½ gt ²

5 = ½ (10) t ²

5 = 5 t ²

t ² = 5/5 = 1

t = sekondi imodzi

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3. Mpira wagwa kuchokera kutalika. Pezani (a) Kuthamanga (b) Mtunda pambuyo pa masekondi atatu (c) Nthawi mumlengalenga ngati liwiro lomaliza ndi 20 m/s. Kuthamanga chifukwa cha mphamvu yokoka = 10 m/s ²

Zodziwika :

Kuthamanga kwa mphamvu yokoka (g) = 10 m/s ²

Akufuna:

(a) Kuthamanga (a)

(b) Mtunda kapena kutalika (h) ngati nthawi yapita (t) = masekondi atatu

(c) Nthawi yopuma (t) ngati v _t = 20 m/s

Yankho:

Chiyerekezo cha kugwa kwaulere:

v _t = gt

h = ½ gt ²

v _t ² = 2 gh

(a) Kuthamanga (a)

Kuthamanga = kuthamanga chifukwa cha mphamvu yokoka = 10 m/s ^2. Zimatanthauza kuwonjezeka kwa liwiro ndi 10 m/s pa sekondi.

(b) Mtunda kapena kutalika (h) pambuyo pa t = masekondi 3

h = ½ gt ² = ½ (10)(3) ² = (5)(9) = mamita 45

(c) Nthawi yatha (t) ngati v _t = 20 m/s

v _t = gt

20 = (10) t

t = 20 / 10 = masekondi awiri

[irp]

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1. Mtunda ndi kusamuka
2. Liwiro lapakati ndi liwiro lapakati
3. Liwiro lokhazikika
4. Kuthamanga kosalekeza
5. Kuyenda kwaulere kwa kugwa
6. Kuyenda pansi mu kugwa kwaulere
7. Kuyenda mmwamba ndi pansi mu kugwa kwaulere