1. Ibhola elikhahlelwayo lishiya umhlabathi nge-engeli engu-θ = 30 o liye endaweni evundlile ngesivinini sokuqala esingu-14 m/s. Bala ijubane lokugcina ngaphambi kokuba ibhola lishaye phansi.
Kwaziwa:
I-engeli ( θ ) = 3 0 o
Ijubane lokuqala (v o ) = 14 m/s
Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s 2
Okufunwayo: Ijubane lokugcina ngaphambi kokuba ibhola lishaye phansi
Isixazululo:
Ingxenye evundlile yejubane lokuqala:
v inkabi = v o cos θ = (14 m/s)(cos 30 o ) = (14 m/s)(0.5 √ 3 ) = 7 √ 3 m/s
Ingxenye eqondile yejubane lokuqala:
v oy = v o isono θ = (14 m/s)(isono 30 o ) = (14 m/s)(0.5) = 7 m/s
Ijubane lokugcina esiqondisweni esiqondile
Khetha indlela eya phezulu njengeyakhayo kanye nendlela eya phansi njengeyakhayo.
Kwaziwa:
Ijubane lokuqala (v o ) = 7 m/s (elihle phezulu)
Ukusheshisa kwamandla adonsela phansi (g) = – 10 m/s 2 (ukwehla okungekuhle)
Ukuphakama (h) = 0 (into ibuyele endaweni yokuqala)
Okufunwayo: Ijubane lokugcina (v t )
Isixazululo:
v t 2 = v o 2 + 2 gh = 7 2 + 2(-10) (0) = 49 – 0 = 49
v t = √49 = 7 m/s
Ijubane lokugcina endaweni evundlile
Ijubane lokuqala ohlangothini oluvundlile lingu- 7 √ 3 m/s. Ijubane aliguquguquki ukuze ijubane lokugcina lifane nejubane lokuqala.
Ijubane lokugcina ngaphambi kokuba into ishaye phansi
2. Umzimba uphakanyiswa phezulu nge-engeli engu-30 o kanti ukuphakama kwawo kungama-5 metres ukusuka esakhiweni. Ijubane lawo lokuqala lingu-10 m/s. Bala ijubane lokugcina ngaphambi kokuba into ishaye phansi! Ukusheshisa kwamandla adonsela phansi kungu-10 m/s 2.
Kwaziwa:
I-engeli ( θ ) = 30 o
Ukuphakama kokuqala (h o ) = amamitha ayi-5
Ijubane lokuqala (v o ) = 10 m/s
Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s 2
Okufunwayo: Ijubane lokugcina
Isixazululo:
Ingxenye evundlile yejubane lokuqala:
v inkabi = v o cos θ = (10 m/s)(cos 30 o ) = (10 m/s)(0.5 √ 3 ) = 5 √ 3 m/s
Ingxenye eqondile yejubane lokuqala:
v oy = v o isono θ = (10 m/s)(isono 30 o ) = (10 m/s)(0.5) = 5 m/s
Ijubane lokugcina esiqondisweni esiqondile
Kwaziwa:
Ijubane lokuqala (v o ) = 5 m/s (elihle phezulu)
Ukusheshisa kwamandla adonsela phansi (g) = – 10 m/s 2 (ukwehla okungekuhle)
Ukuphakama (h) = -5 m ( okungekuhle ngoba umhlabathi ungaphansi kokuphakama kokuqala)
Okufunwayo: Ijubane lokugcina (v t )
Isixazululo:
v t 2 = v o 2 + 2 gh = 5 2 + 2(-10)(-5) = 25 + 100 = 125
v t = √125 m/s
Ijubane lokugcina endaweni evundlile
Ijubane lokugcina endaweni evundlile lingu- 5 √3 m/s.
Ijubane lokugcina
3. Ibhola elincane lilinganiswa ngokuvundlile ngesivinini sokuqala v o = 8 m/s ukusuka esakhiweni esingamamitha ayi-12 ukuphakama. Bala isivinini sokugcina ngaphambi kokuba ibhola lishaye phansi ! Ukusheshisa kwamandla adonsela phansi kungu-10 m/s 2
Kwaziwa:
Ukuphakama (h) = amamitha angu-12
Ijubane lokuqala (v o ) = 8 m/s
Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s 2
Okufunwayo: Ijubane lokugcina (v t )
Isixazululo:
Ingxenye evundlile yejubane lokuqala:
v ox = v o = 8 m/s
Ingxenye eqondile yejubane lokuqala:
v oy = 0 m/s
Ijubane lokugcina esiqondisweni esiqondile
kubalwe kusetshenziswa i-equation ka ukunyakaza kokuwa kwamahhala.
Kwaziwa:
Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s 2
Ukuphakama (h) = 12 m
Okufunwayo: Ijubane lokugcina (v t )
Isixazululo:
v t 2 = 2 gh = 2(10)(12) = 240
v t = √240 m/s
Ijubane lokugcina endaweni evundlile
Ijubane lokuqala ohlangothini oluvundlile lingu-8 m/s. Ijubane aliguquguquki ukuze ijubane lokuqala lilingane nejubane lokugcina. Ngakho ijubane lokugcina ohlangothini oluvundlile lingu-8 m/s.
Ijubane lokugcina
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- Xazulula ijubane lokuqala libe izingxenye ezivundlile neziqondile
- Nquma ukufuduka okuvundlile
- Nquma ukuphakama okuphezulu
- Nquma isikhathi esinqunyiwe
- Nquma indawo yento
- Nquma ijubane lokugcina
