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:
Tātai nekehanga
p = mv = 1 (5) = 5
Mena e 5 ngā wā o te tere i te tere taketake, ā, he pūmau te papatipu, koia rā te wā o te nekehanga e 5 ngā wā o te tere taketake.
2. Ka whiua ake tētahi mea ki runga i tētahi papa whakarara maeneene me te tere tīmatanga o te 10 m/s. Ko te koki whakarara o te papa ki te whakapae he 30 o . Mena ko g = 10 m/s² , mena ko te papatipu o te mea he 2 kg, ko te nekehanga o te mea i muri i te 1 hēkona ko…
Mōhiotia:
Te tere tīmatanga (v o ) = 10 m/s
Koki = 30 o
Te whakaterenga nā te kaha ā-papa (g) = 10 m/s 2
Taumaha (m) = 2 kg
E hiahiatia ana: Te nekehanga (p)
Rongoā:
Tātai Momentum
P = mv = (2 kg)(10 m/s) = 20 kg m/s
Kāore te nekehanga e whakawhirinaki ana ki te taumaha (w = mg).
3. Ka pupuhihia he matā me te tere o te 10 m/s. Mena he 20 karamu te taumaha o te matā, tatauhia te nekehanga o te matā.
Mōhiotia:
Papatipu matā (m) = 20 karamu = 20/1000 kg = 0.02 kg
Tere (v) = 10 m/s
E hiahiatia ana: Te nekehanga (p)
Rongoā:
Tātai nekehanga
p = mv = (0,02 kg)(10 m/s) = 0,2 kg m/s
