Kuyenda pansi mu kugwa kwaulere - mavuto ndi mayankho

Mavuto Othetsedwa mu Linear Motion - Down motion mu free fall

1. Mpira umaponyedwa molunjika pansi ndi liwiro loyambirira la 10 m/s ndipo umafika pansi mu masekondi awiri. Pezani liwiro lomaliza mpira usanagunde pansi. Kuthamanga kwa mphamvu yokoka (g) = 10 m/s ² . Musanyalanyaze kukana madzi.

Zodziwika:

Liwiro loyambirira (v _o ) = 10 m/s

Nthawi yatha (t) = masekondi awiri

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

Kufunidwa: Liwiro lomaliza (v _t )

Yankho:

Kuthamanga kwa 10 m/s ² kumatanthauza kuwonjezeka kwa liwiro ndi 10 m/s pa sekondi. Pambuyo pa masekondi atatu, liwiro = 30 m/s.

Liwiro lomaliza = 10 m/s + 20 m/s = 30 m/s.

Ma equation a Kinematic a kayendedwe ka kuthamanga kosalekeza , monga momwe tawonetsera pansipa:

v _t = vo _o + 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

Liwiro lomaliza = v _t = 30 m/s

[irp]

2. Mwala umaponyedwa molunjika pansi kuchokera pa mlatho ndi liwiro loyambirira la 5 m/s ndipo umafika m'madzi mu masekondi awiri. Werengani kutalika kwa mlatho.

Zodziwika:

Liwiro loyambirira (v _o ) = 5 m/s

Nthawi yatha (t) = masekondi awiri

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

Kufunidwa: kutalika kwa mlatho (h)

Yankho:

h = vot ₊ ½ gt ²

h = (5)(2) + ½ (10)(2) ²

h = 10 + (5)(4)

h = 10 + 20

h = mamita 30

[irp]

3. Mpira umaponyedwa molunjika pansi ndi liwiro loyamba la 10 m/s kuchokera kutalika kwa mamita 80. Pezani (a) Nthawi mumlengalenga (b) Liwiro lomaliza mpira usanagunde pansi.

Zodziwika:

kutalika (h) = mamita 80

Liwiro loyambirira (v _o ) = 10 m/s

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

Akufuna:

(a) Nthawi yopuma (t)

(b) Liwiro lomaliza (v _t )

Yankho:

(a) Nthawi yopuma (t)

Liwiro lomaliza:

v _t ² = v _o ² + 2 gh

v _t ² = (10) ² + 2(10)(80) = 100 + 1600 = 1700

v _t = 41 m/s

Nthawi yopuma (t):

v _t = vo _o + g t

41 = 10 + (10)(t)

41 – 10 = 10 t

31 = 10 t

t = 31 / 10 = masekondi awiri

(b) Liwiro lomaliza (v _{t )}?

v _t = 41 m/s

[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