1. Ka tere te haere o tētahi mea i te tere pumau 10 m/s. Tātaihia te nekehanga rārangi o te mea.
Mōhiotia :
Taumaha (m) = 1 kg
Tere (v) = 10 m/s
E hiahiatia ana: te nekehanga raina (p)
Rongoā:
Te tātai o te nekehanga rārangi:
p = mv
p = te nekehanga rārangi, m = te papatipu, v = te tere
Te nekehanga raina:
p = mv = (1)(10) = 10 kg m/s 2
[irp]
2. E neke ana tētahi poraka 2-kg me tētahi poraka 4-kg i te tere pumau 20 m/s. He aha te nekehanga rārangi o ngā poraka?
Mōhiotia:
Taumaha o te poraka A (m A ) = 2 kg
Taumaha o te poraka B (m B ) = 4 kg
Te tere o te poraka A (v A ) = 20 m/s
Te tere o te poraka B (v B ) = 20 m/s
E hiahiatia ana: Te nekehanga rārangi o te poraka A (p A ) me te nekehanga rārangi o te poraka B (p B )
Rongoā:
Te nekehanga rārangi o te poraka A :
p A = m A v A = (2)(20) = 40 kg m/s
Te nekehanga rārangi o te poraka B :
p B = m B v B = (4)(20) = 80 kg m/s
[irp]
3. E neke ana tētahi poraka 2-kg i te tere pumau 2 m/s, ā, e neke ana tētahi poraka 2-kg i te tere pumau 4 m/s. Tātaihia te nekehanga rārangi o ngā poraka.
Mōhiotia:
Taumaha o te poraka A (m A ) = 2 kg
Taumaha o te poraka B (m B ) = 2 kg
Te tere o te poraka A (v A ) = 2 m/s
Te tere o te poraka B (v B ) = 4 m/s
E hiahiatia ana: te nekehanga raina o ngā poraka
Rongoā:
Te nekehanga rārangi o te poraka A :
p A = m A v A = (2)(2) = 4 kg m/s
Te nekehanga rārangi o te poraka B:
p B = m B v B = (2)(4) = 8 kg m/s
[irp]
4. He mea 5-kg te taumaha e okioki ana. He aha te nekehanga rārangi o te nekehanga?
Mōhiotia:
Taumaha (m) = 5 kg
Te tere o te mea (v) = 0
E hiahiatia ana : te nekehanga raina (p)
Rongoā:
p = mv = (5)(0) = 0
[wpdm_package id='1155′]
- Ngā raruraru me ngā otinga o te nekehanga rārangi
- Ngā raruraru me ngā otinga o te nekehanga me te hihiri
- Ngā raruraru me ngā otinga o ngā tukinga tino ngāwari i roto i te taha kotahi
- Ngā raruraru me ngā otinga o ngā tukinga kore-whakapūmau tino tika i roto i te taha kotahi
- Ngā raruraru me ngā otinga mō ngā tukinga kore-whakapūmau i roto i te taha kotahi
