Ukunyakaza kwe-parabolic noma ukunyakaza kwe-projectile uhlobo lokunyakaza lapho into inikezwa khona ijubane lokuqala bese ukunyakaza kwayo kuthonywa ngokuphelele amandla adonsela phansi. Ukunyakaza kwe-projectile kuwukunyakaza okunezinhlangothi ezimbili, inhlanganisela yokunyakaza okuvundlile nokuqondile, ngokungafani nokunyakaza okuqondile noma ukuwa okukhululekile, okuwukunyakaza okunezinhlangothi eyodwa.
UGalileo wachaza ukuthi ukunyakaza kwe-parabolic kungaqondwa ngokucabangela izingxenye eziqondile nezivundlile zokunyakaza ngokwehlukana. Ukusheshisa kwamandla adonsela phansi kusebenza kuphela ohlangothini oluqondile, hhayi ohlangothini oluvundlile. Ngakho-ke, ingxenye evundlile yokunyakaza kwe-projectile ibhekwa njengokunyakaza okuqondile okufanayo , kanti ingxenye evundlile yokunyakaza kwe-parabolic ibhekwa njengokuwa okukhululekile.
Isibonelo sezinkinga
1. Imibuzo Yokuhlolwa Kazwelonke Ka-2018
Indiza endiza ngokuvundlile ngesivinini esingamamitha angu-300/s ukuphakama okungamamitha angu-80 iwisa ibhomu (g = 10 m/s 2 ). Ibhomu lishaya ilitshe ngebanga elivundlile elingamamitha angu-…….
Ingxoxo
Kuyaziwa:
Ijubane lokuqala (v o ) = 300 m/s
Ukuphakama (h) = 80 m
Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s 2
Kubuziwe: Ibanga elivundlile (x)
Impendulo:
Indlela yokunyakaza efana ne-parabolic njengoba kuboniswe esithombeni, ukunyakaza ohlangothini oluqondile kuhlaziywa njengokunyakaza kokuwa kwamahhala kanti ukunyakaza ohlangothini oluvundlile kuhlaziywa njengokunyakaza okuqondile okufanayo.
Ibanga elivundlile libalwa kusetshenziswa ifomula yokunyakaza eqondile efanayo.
x = vt
Incazelo: x = ibanga elivundlile, v = ijubane ohlangothini oluvundlile, t = isikhawu sesikhathi
Ekuhambeni okuqondile okufanayo, ijubane lento lihlala linjalo ukuze ijubane eliseceleni elivundlile = ingxenye yejubane lokuqala esiqondisweni esivundlile = ijubane lokuqala = 300 m/s.
Isikhathi sesikhawu (t) sibalwa kusetshenziswa ifomula yokunyakaza kokuwa kwamahhala , ngokuhlaziya ukunyakaza ohlangothini oluqondile.
h = ½ gt 2
80 = ½ (10) t 2
80 = 5 t 2
80/5 = t 2
16 = t 2
t = √16
t = imizuzwana emi-4
Ibanga elivundlile:
x = vt = (300)(4) = amamitha ayi-1200
2. Imibuzo Yokuhlolwa Kazwelonke Ka-2017
Ibhola eliphonswe nge-engeli yokuphakama engu-30 ° lilandela indlela efana neyomfanekiso njengoba kuboniswe esithombeni. Ukusheshisa okubangelwa amandla adonsela phansi kungu-10 m/s -2 , ngakho-ke isilinganiso samajubane kumaphuzu A, B, kanye no-C...
Ingxoxo
Ijubane lebhola liqukethe ijubane lokuqondisa eliqondile (v y ) kanye nejubane lokuqondisa eliqondile (v x ).
Bala i-v ox :
v inkabi = v o cos 30 o = 60 cos 30 = 60 ( 0,5 √3 ) = 30 √3 m/s
v oy = v o isono 30 o = 60 isono 30 = 60 (0,5) = 30 m/s
Bala ijubane eliqondile kumaphuzu A, B kanye no-C.
Ijubane eliqondile endaweni A:
v ty = v oy – gt = 30 – 10(1) = 30 – 10 = 20 m/s
Ijubane eliqondile endaweni B:
v ty = v oy – gt = 30 – 10(2) = 30 – 20 = 10 m/s
Ijubane eliqondile endaweni C:
v ty = v oy – gt = 30 – 10(3) = 30 – 30 = 0 m/s
