ahupūngao

3 ngā pātai mō te whārite rerekētanga pūmanawa

1. Ka nekehia tētahi utu hiko i roto i tētahi papa hiko ōrite me te kaha o te 2√3 N i te tawhiti o te 20 cm. Mena kei te koki o te 30 o te nekehanga o te utu hiko te ahunga o te kaha ^, he aha te rerekētanga o te kaha pūmanawa hiko i ngā tūranga tīmatanga me ngā tūranga whakamutunga o te utu hiko.

Mōhiotia:

Te kaha (F) = 2√3 N

Tawhiti (s) = 20 cm = 0.2 m

Koki (θ) = 30 ^o

E hiahiatia ana: Te rerekētanga pūmanawa hiko

Rongoā:

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3 ngā pātai mō te whārite tere koki

1. Ko te radius o tētahi mea e neke ana i te ara porowhita he 0.5 m. Ka taea e te matūriki te hipoki i tētahi koki o te 60π rad i roto i te 15 hēkona. Tātaihia te tere koki o te mea.

Mōhiotia:

Pūtoro (r) = 0.5 mita

Koki (θ) = 60π rād

Wā wā (t) = 15 hēkona

E hiahiatia ana: Te tere koki (ω)

Rongoā:

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3 ngā pātai mō te whārite kaha hua

1. Ka neke tētahi waka he 5 tana te taumaha mai i te okiokinga i roto i te 50 hēkona, ā, ka eke ki te tere o te 72 km/haora. Ko te kaha i runga i te waka ko…

Mōhiotia:

Taumaha (m) = 5 tāne = 5000 kg

Tere tīmatanga (vo) = 0

Tere whakamutunga (vt) = 72 km/h = 20 m/s

Wā wā (t) = 50 hēkona

E hiahiatia ana: Te Kaha (F)

Rongoā:

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3 ngā pātai mō te whārite Impulse

1. Kei te neke tētahi motuka he 250 kg te taumaha me te tere o te 72 km/haora, kātahi ka whakaterea ki te kaha pumau kia 80 km/haora te tere i roto i te 5 hēkona. Tātaihia te iri mō te 5 hēkona

Mōhiotia:

Ko te taumaha o te motuka (m) = 250 kg

Tere tīmatanga (v _o ) = 72 km/h = 20 m/s

Tere whakamutunga (vt ₎ = 80 km/h = 22 m/s

Wā wā (t) = 5 hēkona

E hiahiatia ana: Whakatauhia te hihiri (I)

Rongoā:

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3 ngā pātai mō te whārite kaha waku

1. Ka whakatakotoria te Poraka A 3 kg ki runga i te tēpu, kātahi ka herea ki tētahi taura e hono ana ki te kōhatu B = 2 kg mā roto i tētahi pūreirei e whakaaturia ana. Kāore i te arohia te papatipu me te waku o ngā pūreirei. Te whakaterenga nā te kaha ā-papatipu g = 10 m/s ^2. Tātaihia te whakaterenga o te pūnaha me te kumenga i roto i te taura mēnā:

a) tēpu maeneene

b) tēpu taratara me te tauwehenga o te waku nekeneke o te 0.4

Mōhiotia:

Ko te taumaha o te poraka A (m _A ) = 3 kg

Ko te papatipu o te toka B (m _B ) = 2 kg

Te whakaterenga nā te kaha ā-papa (g) = 10 m/s ²

Taumaha o te poraka A (w _A ) = mg = (3)(10) = 30 Newton

Taumaha o te toka B (w _B ) = mg = (2)(10) = 20 Newton

E hiahiatia ana: Te whakaterenga o te pūnaha (a) me te kukū i roto i te taura (T)

Rongoā:

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3 ngā pātai mō te whārite kaha noa

1. He 5 kg te taumaha o tētahi poraka. Mēnā ko te g = 10 m/s ² , whakatauhia:

a) te taumaha o te poraka

b) te kaha noa mēnā ka whakatakotoria te poraka ki runga i te papa papatahi

c) te kaha noa mēnā ka tau te poraka ki runga i tētahi papa whakarara e hanga ana i tētahi koki 30 ^° ki te whakapae

Mōhiotia:

Ko te taumaha o te poraka (m) = 5 kg

Te whakaterenga nā te kaha ā-papa (g) = 10 m/s ²

E hiahiatia ana: w, N i runga i te papa me N i runga i te pari

Rongoā:

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3 Ngā Pātai mō te Whārite Taura

1. E whakaatu ana te pikitia i raro nei i ētahi poraka e toru, arā, ko A, ko B me C, kei runga i tētahi papa whakapae maeneene. Mēnā ko te papatipu A = 1 kg, ko te papatipu B = 2 kg, ko te papatipu C = 2 kg, ā, ko F = 10 N, tātaihia te ōwehenga o te kume i roto i te taura i waenganui i a A me B ki te kume i roto i te taura i waenganui i a B me C.

Mōhiotia:

Ko te papatipu o A (mA ₎ = 1 kg

Taumaha B (m _B ) = 2 kg

Ko te papatipu o C (m _C ) = 2 kg

Te kaha kume (F) = 10 N

E hiahiatia ana: T _AB : T _BC

Rongoā:

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3 Ngā raruraru me ngā otinga mō te whārite o te wā o te korekore

1. Ko te radius o tētahi rango totoka he 8 cm te whānui, ā, ko te taumaha he 2 kg. I taua wā, ko te radius o tētahi pōro totoka he 5 cm te whānui, ā, ko te taumaha he 4 kg. Mena ka huri ngā mea e rua me te tuaka i roto i tō rāua pokapū, whakatauhia te ōwehenga o te wā o te inertia o te rango me te pōro.

Mōhiotia:

Te pūtoro o te rango totoka (r) = 8 cm = 0.08 m

Papatipu rango totoka (m) = 2 kg

Te pūtoro o te pōro totoka (r) = 5 cm = 0.05 m

Ko te taumaha o te pōro totoka (m) = 4 kg

E hiahiatia ana: Te whakataurite i te wā o te korekore o te rango me te pōro

Otinga :

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3 ngā raruraru me ngā otinga mō te whārite Momentum

1. Ki te eke te tere o te mea ki te 5 whakarea o tōna tere taketake, ka noho te nekehanga o te mea hei … tōna nekehanga taketake.

Mōhiotia:

Tere tīmatanga = v

Tere whakamutunga = 5v

Papatipu = 1

E hiahiatia ana: Te nekehanga

Rongoā:

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3 ngā raruraru me ngā otinga mō te whārite Tere

1. Ka haere tētahi motuka ki te tonga mō te 100 m i roto i te 1 meneti, kātahi ka huri ki te rawhiti mō te 120 m i roto i te 0.5 meneti. Tātaihia te tere toharite o te motuka.

Mōhiotia:

Tapeke tawhiti = 100 mita + 120 mita = 220 mita

Te wā katoa = 1 meneti + 0.5 meneti = 1.5 meneti = 90 hēkona

E hiahiatia ana: Te tere toharite

Rongoā:

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