Mibvunzo mitatu nezve equation yeImpulse
1. Mota ine huremu hwe250 kg iri kufamba nekumhanya kwe72 km/awa, yobva yakurumidziswa nesimba risingaperi zvekuti mumasekonzi mashanu kumhanya kwayo kunosvika 80 km/awa. Sarudza kuti chii chinoikonzera kwemasekondi mashanu.
Anozivikanwa:
Huremu hwemota (m) = 250 kg
Kumhanya kwekutanga (vo ) = 72 km/h = 20 m/s
Kumhanya kwekupedzisira (v t ) = 80 km/h = 22 m/s
Nguva yepakati (t) = masekondi gumi nemashanu
Zvinodiwa: Sarudza kurudziro (I)
Solution:
Fomura yepfungwa: Pfungwa = Kuchinja kwesimba
Ini = Δp
I = m (v t – vo o ) = (250)(22 – 20) = (250)(2)
I = 500 kg m/s
2. Chinhu chine huremu hwe 0.4 kg chinotanga kufamba nekumhanya kwe 20 m/s chinomiswa nesimba risingaperi re 50 N munguva yakati. Kukura kwei kwei kwei?
Zvinozivikanwa :
Huremu (m) = 0.4 kg
Kumhanya (v o ) = 20 m/s
Kumhanya kwekupedzisira (v t ) = 0 m/s
Simba (F) = 50 N
Kudiwa: Kufungidzira (I)
Solution:
Fomura yepfungwa: Pfungwa = Kuchinja kwesimba
Ini = Δp
I = m (v t – vo o ) = (0,4)(0 – 20) = (0,4)(-20)
I = 8 kg m/s
3. Chinhu chine huremu m chiri kufamba nespeed yakaenzana na v, saka simba rechinhu chacho…
mhinduro
Kufuridzira = kuchinja kwesimba. Kufuridzira kunochinja kana huremu kana kumhanya kuchichinja. Saka kana kumhanya nehuremu zvikaramba zviripo saka hapana shanduko musimba. Zvekuti hapana kufuridzira.
