Kufungidzira - matambudziko nemhinduro

Kufungidzira - matambudziko nemhinduro

1. Bhora risina 0.5 kg rinodonha kubva pakukwirira kweh ₁ = 7.2 metres uye rinoratidza kureba kweh ₂ = 3.2 metres. Kukurumidza kunokonzerwa negiravhiti = 10 m/s ^2. Sarudza kumanikidzwa.

Zvinozivikanwa:

Huremu hwebhora (m) = 0.5 kg

Kureba kwekutanga (h ₁ ) = 7.2 metres

Kureba kwechipiri (h ₂ ) = 3.2 metres

Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s ²

Kudiwa: Kusundidzira (I)

Solution:

Kumhanya kwebhora risati raroverana ( _vo )

Kumhanya kwebhora risati rasangana kwakaverengwa uchishandisa equation yekufamba kwemahara. Inozivikanwa: Kureba (h) = 7.2 metres, kumhanyisa nekuda kwegiravhiti (g) = 10 m/s ² . Inodiwa: Kumhanya kwekupedzisira mushure mekusangana.

v ² = 2 gh

vo _o ² = 2(10)(7.2) = 144

v _o = 2(10)(7.2) = 12 m/s

Kumhanya kwebhora risati rasangana (vo ₎ = -12 m/s. Chiratidzo chekudzima chinoratidza divi rebhora.

Kumhanya kwebhora mushure mekuroverana (v _t )

Kumhanya kwebhora mushure mekuroverana kwakaverengwa uchishandisa equation yekufamba kwakamira. Inozivikanwa : kureba (h) = 3.2 metres, kumhanyisa nekuda kwegiravhiti (g) = -10 m/s ² , kumhanya kwekupedzisira pakukwirira kwakanyanya (v _t ² ) = 0. Inodiwa : Kumhanya kwekutanga mushure mekuroverana pakati pebhora nepasi.

v _t ² = v _o ² + 2 gh

0 = vo ₂ ⁺ 2 (-10)(3.2)

vho ₂ = ⁶⁴

v _o = √64 = 8 m/s

Kumhanya kwebhora mushure mekurovera (v _t ) i8 m/s

Kufungidzira (I)

Kusundidzira (I) = kuchinja kwesimba (Δp)

I = m (v _t – vo _o ) = (0.5)(8-(-12)) = (0.5)(8 + 12) = (0.5)(20) = 10 Masekondi eNewton

2. Bhora remagiramu mashanu rinodonha zvakasununguka kubva pakakwirira rorova pasi. Kukurumidza kunokonzerwa negiravhiti, g = 10 ms ^-2 . Kumhanya kwebhora risati rarova i6 ms ^-1 uye mushure mekurova, bhora rinoratidzwa rakamira pa4 m/s. Sarudza kuti chii chinoriita.

Zvinozivikanwa:

Huremu hwebhora (m) = magiramu mashanu = 0.005 kg

Kumhanya kwebhora risati rasangana (vo ₎ = -6 m/s

Kumhanya kwebhora mushure mekurovera (v _t ) = 4 m/s

Zviratidzo zvekuwedzera nekubvisa zvinoratidza kuti nzira iri pamberi pekurovera yakatarisana neyairi mushure mekurovera.

Kudiwa: Kufungidzira (I)

Solution:

Kusundidzira (I) = shanduko yese mukukura (Δp).

I = Δp = mv _t – mv _o = m (v _t – v _o )

Ini = (0.005)(4 – (-6)) = (0.005)(4 + 6) = (0.005)(10) = 0.05 Newton second

3. Bhora remagiramu makumi maviri rinokandwa nekumhanya kwe4 ms ^-1 kuruboshwe. Mushure mekurovera nemadziro, bhora rinoonekwa nekumhanya kwev ₂ = 2 ms ^-1 kurudyi. Sarudza kuti chii chinonzi impulse.

Zvinozivikanwa:

Huremu hwebhora (m) = 20 magiramu = 0.020 kg

Kumhanya kwebhora risati rasangana (vo ₎ = -4 m/s (kuruboshwe)

Kumhanya kwebhora mushure mekuroverana (v _t ) = +2 m/s (kurudyi)

Zviratidzo zvekuwedzera nekubvisa zvinoratidza divi rakasiyana.

Kudiwa: Kusundidzira

Solution:

Kufurirwa (I) = kuchinja kwesimba (Δp) = mv _t – mv _o

Kufungidzira (I) = m (v _t – vo _o ) = 0.02 (2 – (-4))

Kufungidzira (I) = 0.02 (2 + 4) = 0.02 (6)

Kufungidzira (I) = 0.12 masekondi eNewton.

4. Bhora re2 kg richifamba ne5 m/s rinorova madziro uye rinodzokera shure nekukurumidza kwe -5 m/s. Tsvaga simba riri pabhora.
Mhinduro: Kukurumidza = kuchinja kwesimba = m(v₂ – v₁) = 2(-5 – 5) = -20 kg m/s

5. Chinhu chinorema 3 kg chinosangana nesimba re6 N kwemasekonzi mana. Chii chinonzi impulse inosangana nechinhu chacho?
Mhinduro: Kufungidzira = FΔt = 6 × 4 = 24 Ns

6. Chinhu chinorema 0.5 kg chinomira uye chinokurumidziswa nemhepo ye10 N·s. Chii chinonzi kumhanya kwekupedzisira?
Mhinduro: Kumhanya kwekupedzisira = Kukurumidza / uremu = 10 / 0.5 = 20 m/s

7. Kushanduka kwe30 N·s kunoshanda pachinhu chinorema 6 kg. Chii chinonzi kuchinja kwespeed?
Mhinduro: Δv = Kuvhunduka / huremu = 30 / 6 = 5 m/s

8. Bhora re 100 g richifamba ne 3 m/s rinomiswa ne impulse. Chii chinonzi impulse?
Mhinduro: Kufungidzira = m(v₂ – v₁) = 0.1(0 – 3) = -0.3 kg·m/s

9. Chinhu chinorema 2 kg chinosangana nesimba re4 N kwemasekondi mashanu. Tsvaga simba racho.
Mhinduro: Kufungidzira = FΔt = 4 × 5 = 20 Ns

10. Chinhu chinorema 3 kg chinofamba ne3 m/s uye chinozorora nekuda kwekufema. Tsvaga mweya.
Mhinduro: Kufungidzira = m(v₂ – v₁) = 3(0 – 3) = -9 kg·m/s

11. Chinhu chinorema 5 kg chinosangana nesimba re2 N kwemasekonzi matatu. Chii chinonzi impulse?
Mhinduro: Kufungidzira = FΔt = 2 × 3 = 6 Ns

12. Kushanduka kwe8 N·s kunoshanda pachinhu chinorema 4 kg. Chii chinonzi kuchinja kwespeed?
Mhinduro: Δv = Kuvhunduka / huremu = 8 / 4 = 2 m/s

13. Bhora re 1 kg richifamba ne 2 m/s rinorova madziro uye rinodzosera divi raro nekumhanya kumwe chete. Tsvaga simba riri pabhora.
Mhinduro: Kufungidzira = m(v₂ – v₁) = 1(-2 – 2) = -4 kg·m/s

14. Chinhu chinorema 4 kg chinosangana nesimba re3 N kwemasekondi mashanu. Tsvaga simba racho.
Mhinduro: Kufungidzira = FΔt = 3 × 3 = 9 Ns

15. Kushanduka kwe10 N·s kunoshanda pachinhu chinorema 2 kg. Chii chinonzi kuchinja kwespeed?
Mhinduro: Δv = Kuvhunduka / huremu = 10 / 2 = 5 m/s

16. Chinhu chinorema 3 kg chinosangana nesimba re5 N kwemasekonzi mana. Chii chinonzi impulse inosangana nechinhu chacho?
Mhinduro: Kufungidzira = FΔt = 5 × 2 = 10 Ns

17. Chinhu chinorema 4 kg chinofamba ne5 m/s uye chinozorora nekuda kwekufema. Tsvaga mweya.
Mhinduro: Kufungidzira = m(v₂ – v₁) = 4(0 – 5) = -20 kg·m/s

18. Chinhu chinorema 2 kg chinosangana nesimba re6 N kwemasekondi mashanu. Tsvaga simba racho.
Mhinduro: Kufungidzira = FΔt = 6 × 3 = 18 Ns

19. Kushanduka kwe12 N·s kunoshanda pachinhu chinorema 3 kg. Chii chinonzi kuchinja kwespeed?
Mhinduro: Δv = Kuvhunduka / huremu = 12 / 3 = 4 m/s

20. Chinhu chinorema 5 kg chinosangana nesimba re1 N kwemasekonzi matatu. Chii chinonzi impulse?
Mhinduro: Kufungidzira = FΔt = 1 × 4 = 4 Ns

21. Kushanduka kwe15 N·s kunoshanda pachinhu chinorema 5 kg. Chii chinonzi kuchinja kwespeed?
Mhinduro: Δv = Kuvhunduka / huremu = 15 / 5 = 3 m/s

22. Bhora re3 kg richifamba ne4 m/s rinomiswa ne impulse. Chii chinonzi impulse?
Mhinduro: Kufungidzira = m(v₂ – v₁) = 3(0 – 4) = -12 kg·m/s

23. Chinhu chinorema 2 kg chinosangana nesimba re5 N kwesekondi imwe chete. Tsvaga simba rekufema.
Mhinduro: Kufungidzira = FΔt = 5 × 1 = 5 Ns

1. Chii chinonzi kuvhunduka?
   • Pindura: Kufuridzira (impulse) imhaka yesimba uye nguva yarinoshanda pachinhu. Inomiririra shanduko mukukura kwechinhu uye inopiwa nefomura. $\text{Kufungidzira}=F\times \Delta t$.
2. Kukurumidza kuita zvinhu kunoenderana sei nekukura kwesimba?
   • Pindura: Kufuridzira kwakaenzana nekuchinja kwesimba rechinhu. Kana chinhu chikasangana nefurira, simba racho rinochinja nechiyero ichocho.
3. Sei zvakachengeteka kumhara pameti yakapfava pane pasi rakaoma kana uchisvetuka kubva pakakwirira?
   • Pindura: Meti yakapfava inowedzera nguva inotorwa kuti jumper imire, zvichienzaniswa nepasi rakasimba. Nguva yakareba yekumira inoreva simba diki rinoshandiswa pajumper, zvichideredza njodzi yekukuvara. Nguva yakareba iyi inokonzera simba shoma asi simba rakafanana.
4. Ma airbag mumotokari anoshanda sei kana tichitarisa kufambiswa kwemhepo?
   • Pindura: Mabhegi emhepo anokurumidza kuputira panguva yekuroverana, zvichiwedzera nguva iyo simba remunhu rinosvika pazero. Nekuwedzera nguva yenguva yesimba (kuderedza simba), simba rinowanzo shandiswa pamunhu rinoderedzwa, izvo zvinoderedza njodzi yekukuvara.
5. Sei vatambi vebaseball "vachitevera" pavanorova bhora?
   • Pindura: Kutevera kunowedzera nguva yekubata bhora pakati pechibage nebhora. Nguva yakareba yekubata bhora zvinoreva kuti bhora rinogona kubatwa nepfungwa huru, izvo zvinogona kuwedzera shanduko mukufamba kwebhora, zvichikonzera kurohwa kwaro zvakanyanya.
6. Sei zvinhu zvinotakurwa zvichiwanzozara nezvinhu zvekushongedza?
   • Pindura: Zvinhu zvinotsigira chinhu, zvakaita sefuro kana kuti bubble wrap, zvinowedzera nguva inotorwa kuti chinhu chimire kana chasangana nesimba (semuenzaniso, panguva yekumira kamwe kamwe kana kudonha). Izvi zvinoderedza simba repakati pechinhu chacho pakuita kuti chinhu chishande, zvichibatsira kudzivirira kukuvara.
7. Kufungidzira kunotsanangura sei mhedzisiro yekusvetuka basketball nesimba rakawanda?
   • Pindura: Kushandisa simba rakawanda pakusvetuka bhora kunowedzera simba rinoiswa kubhora, zvichikonzera shanduko huru mukufamba kwebhora. Izvi zvinoreva kuti bhora richadzoka nekumhanya kwakakwirira.
8. Panyaya yekukurumidza, sei vatambi vachikurudzirwa "kukunguruka" pavanodonha?
   • Pindura: Kukunguruka kana wadonha kunowedzera nguva iyo shanduko yesimba inoitika. Izvi zvinoreva kuti simba rinowanzo shandiswa pamuviri wemutambi rinoderera, zvichideredza mukana wekukuvara.
9. Kana masimba maviri akasiyana-siyana akashanda pachinhu kwenguva yakafanana, manzwiro avo achaenzaniswa sei?
   • Pindura: Kufurirwa kunobva musimba nenguva. Sezvo nguva yacho yakafanana kune ese ari maviri, kufurirwa kwesimba guru kuchave kukuru kupfuura kwesimba diki.
10. Sei vatambi vegorofu vachishandisa kufamba kwe "swinging" pavanorova bhora regorofu, maererano nepfungwa yekusundidzira?

• Pindura: Kufamba-famba kwebhora kunowedzera nguva yekubata bhora nebhora. Nguva yakareba yekubata bhora inobvumira kuti bhora riwedzere kubatwa, zvichiita kuti bhora rive nekuchinja kukuru mukufamba kwaro uye, nokudaro, riende kure.