3 Ngā tauira o ngā pātai nekehanga poutū ki runga
1. Ka whiua te pōro ki runga poutū me te tere tīmatanga o te 20 m/s. Tātaihia te teitei mōrahi o te pōro. g = 10 m/s2
Kōrero
I te nekehanga poutū ki runga, ka puhoi haere te tere o te mea ina neke ake, ā, ina hoki ki raro, ka tere haere. Nō reira, ko te nekehanga poutū ki runga he tauira anō hoki o te GLBB.
Tātai GLBB :
vt = vo + i
s = vo t + ½ i2
vt2 = vo2 + 2 ngā toki
3 Ngā tauira o ngā pātai nekehanga poutū ki raro
1. Ka whiua poutūtia te pōro ki raro mai i tētahi whare maha-papa me te tere tīmatanga o te 10 m/s, ā, ka tae ki te whenua i muri i te 2 hēkona. He aha te tere o te pōro ina pā ki te whenua? g = 10 m/s2
Kōrero
E mōhiotia ana:
vo = 10m/s
t = 2 hēkona
karamu = 10 m/s2
I pātaihia:
16 Ngā Tauira o ngā Pātai Nekehanga Hinga Noa.
1. Ka wehea te hua kokonati i te kākano, ā, ka tau ki te whenua i muri i ngā hēkona e toru. He aha te tere o te kokonati ina pā ki te whenua? karamu = 10 m/s2
Kōrero
E mōhiotia ana :
t = 3 hēkona
karamu = 10 m/s2
I pātaihia :
4 Ngā tauira o ngā rahinga i ahu mai, ngā tātai ine ā-ao me ngā tātai waeine
| Ngā rahinga i ahu mai | Tātai | He aha te moni matua kei roto? | Ngā rahinga o ngā rahinga i ahu mai | Pūnaha Ao o ngā Wāhanga Ngā rahinga i ahu mai |
| Rorarau | Te roa x te whānui | Roa (2) | [L2] | m2 |
| Te rōrahi o te porowhita | Te roa x te whānui x te teitei | Roa (3) | [L3] | m3 |
| Kiato | Taumaha / Rōrahi | Taumaha (1), roa (3) | [M] / [L]3] = [M][R-3] | Kg / m3 |
| Te tere | Tawhiti / wā | Roa (1), wā (1) | [R] / [T] = [R] [T]-1] | m / s |
| Whakaterenga | Tere / wā | Roa (1), wā (2) | [L] [T]-1] / [T] = [L] [T-2] | m / s2 |
| Gaya | Papatipu x whakaterenga | Papatipu (1), roa (1), wā (2) | [M][L][T-2] | Kg m/s2 |
| Pakihi | Te kaha x te nekehanga | Papatipu (1), roa (2), wā (2) | [M][L][T-2[R] = [M][R2[T-2] | kg m2/s2 |
Hei kimi i te maha o ngā rahinga taketake, tuatahi titoa te tātai rahinga kua ahu mai.
Ngā tohutohu mō te whakamātautau ture a Archimedes
Ko te whāinga o te whakamātautau ture a Archimedes:
– Ka taea e ngā ākonga te ine i te rōrahi me te taumaha o te wai kua nekehia e tētahi mea kua rukuhia ki te wai.
– Ka taea e ngā ākonga te mōhio me te mārama ki te ture a Ākimete
Ngā taputapu me ngā rauemi:
– Ipu rahi-waenga (1)
– Ipu iti (1)
– Teinamōmita (1)
– Utaina (1)
6 Ngā Tauira o Ngā Pātai Ture a Ākimete
1. E hia te rōrahi o te kōhatu e whakanohoia ana ki te wai moana mēnā ko te taumaha o te wai moana kua nekehia e te kōhatu he 2 Newton? Te mātotoru o te wai moana = 1025 kg/m3.
Kōrero
5 Ngā tauira o ngā pātai mō te pōrewarewa
1. Ko te taumaha o te kawenga i te hau he 3 N, ko te taumaha o te kawenga i te wai he 2,8 N. E hia te kaha pōrewarewa e pā ana ki te kawenga e te wai?
Kōrero:
Te Mārama ki te Ture a Pascal
He pēhea te mahi a te tīki/ara hiki waipēhi ina whakamahia hei hiki i te waka? He pēhea te mahi a ngā pēki waipēhi ina whakamahia hei whakaroa i te waka?
E ai ki tā tātou i ako ai i te kaupapa o te Pēhanga Wai , ka pēhia e ia wai ngā mea katoa e pā atu ana ki a ia. Ko te wai e ringihia ana e tātou ki roto i te karāhe ka pēhia ngā pakitara o te karāhe. Waihoki, ina kaukau tātou i roto i te puna kaukau, i te wai moana rānei, ka pēhia e te wai tō tātou tinana katoa.
9 Ngā Tauira o te Ture a Pascal
1. Ko te horahanga whakawhiti-wāhanga o ia tīki waipēhi he 0,04 m2 me te 0,10 m2Mena he 5 Newton te kaha whakauru, he aha te kaha whakaputa mōrahi?
Kōrero:
E mōhiotia ana:
A1 = 0,04 m2
A2 = 0,10 m2
F1 = 5 N
I pātaihia: F2 ?
Whakautu:
I te akoranga ahupūngao o mua, i ako mātou i ngā kaupapa o te hihiri matūriki me te hihiri hurihuri . I roto i te hihiri matūriki, i ako mātou i ngā matūriki i roto i te nekehanga whakawhiti ( nekehanga poutū , nekehanga porowhita , nekehanga parabolic ). I roto i te hihiri hurihuri, i ako mātou i ngā tinana mārō hurihuri. I roto i tēnei kaupapa, i ako mātou i ngā mea kei roto i te taurite. E rua ngā momo taurite, arā, te taurite pūmau me te taurite hihiri. E ai ki te ture tuatahi a Newton, kei roto te mea i te taurite pūmau mēnā kei te okioki te mea, ā, kei roto te mea i te taurite hihiri mēnā kei te neke te mea i te tere pumau. Ka aro nui tēnei pepa ki te matapaki i te taurite pūmau (ngā mea tūmau).