Ho sisinyeha ha ho oa ka bolokolohi - mathata le litharollo

Mathata a Rarollotsoeng ho Motsamao o Molelele – Motsamao o theohelang tlase nakong ea ho oa ha mahala

1. Bolo e lahlelwa fatshe ka lebelo la pele la 10 m/s mme e fihla fatshe ka metsotswana e 2. Fumana lebelo la ho qetela pele bolo e thula fatshe. Ho potlaka ha matla a khoheli (g) = 10 m/s ² . Hlokomoloha ho hanyetsa metsi.

Tse tsejoang:

Lebelo la pele (vo _o ) = 10 m/s

Nako e fetileng (t) = metsotsoana e 2

Ho potlaka ha matla a khoheli (g) = 10 m/s ²

Ho batloa: Lebelo la ho qetela (v _t )

Tharollo:

Ho potlaka ha 10 m/s ² ho bolela keketseho ea lebelo ka 10 m/s ka motsotsoana. Kamora metsotsoana e 3, lebelo = 30 m/s.

Lebelo la ho qetela = 10 m/s + 20 m/s = 30 m/s.

Li-equation tsa Kinematic bakeng sa motsamao ka ho potlaka ho sa khaotseng , joalo ka ha ho bontšitsoe ka tlase:

v _t = vo _o + ho ………. 1

h = vo _o t + ½ ho ² ………. 2

v _t ² = v _o ² + 2 ah ………. 3

v _t = v _o + g t

v _t = 10 + (10)(2)

v _t = 10 + 20 = 30 m/s

Lebelo la ho qetela = v _t = 30 m/s

[irp]

2. Lejoe le lahleloa ka ho otloloha tlase ho tloha borokhong ka lebelo la pele la 5 m/s mme le fihla metsing ka metsotsoana e 2. Bala bolelele ba borokho.

Tse tsejoang:

Lebelo la pele (vo _o ) = 5 m/s

Nako e fetileng (t) = metsotsoana e 2

Ho potlaka ka lebaka la matla a khoheli (g) = 10 m/s ²

Ho batloa: bophahamo ba borokho (h)

Tharollo:

h = vot ₊ ½ gt ²

h = (5)(2) + ½ (10)(2) ²

h = 10 + (5)(4)

h = 10 + 20

h = limithara tse 30

[irp]

3. Bolo e lahlelwa fatshe ka lebelo la pele la 10 m/s ho tloha bophahamong ba limithara tse 80. Fumana (a) Nako moyeng (b) Lebelo la ho qetela pele bolo e otla fatshe.

Tse tsejoang:

bophahamo (h) = limithara tse 80

Lebelo la pele (vo _o ) = 10 m/s

Ho potlaka ha matla a khoheli (g) = 10 m/s ²

Ho batloa:

(a) Nako e sa fellang (t)

(b) Lebelo la ho qetela (v _t )

Tharollo:

(a) Nako e sa fellang (t)

Lebelo la ho qetela:

v _t ² = v _o ² + 2 gh

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

v _t = 41 m/s

Nako ea ho arohana (t):

v _t = v _o + g t

41 = 10 + (10)(t)

41 – 10 = 10 t

31 = 10 t

t = 31 / 10 = metsotsoana e 3,1

(b) Lebelo la ho qetela (v _{t )}?

v _t = 41 m/s

[irp]

[ID ea sephutheloana sa wpdm='513′]

[ID ea sephutheloana sa wpdm='517′]

1. Sebaka le ho falla
2. Lebelo le tloaelehileng le lebelo le tloaelehileng
3. Lebelo le sa fetoheng
4. Ho potlaka kamehla
5. Motsamao oa hoetla o lokolohileng
6. Motsamao oa ho theoha ha ho oa ka bolokolohi
7. Motsamao o yang hodimo le tlase nakong ya ho wa ha mahala