Nquma isikhathi sokunyakaza kwe-projectile

Izinkinga ezixazululiwe ekunyakazeni kwe-projectile - nquma isikhathi sokuphumula

1. Ibhola elikhahlelwayo lishiya umhlabathi nge-engeli engu-θ = 30 ^o liye endaweni evundlile ngesivinini sokuqala esingu-10 m/s. Bala isikhathi sokuphumula ukuze ufinyelele ukuphakama okuphezulu! Ukusheshisa kwamandla adonsela phansi kungu-10 m/s ².

Kwaziwa:

I-engeli (θ) = 3 0 ^o

Ijubane lokuqala (v _o ) = 10 m/s

Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s ²

Okufunwayo: Isikhathi sokufinyelela ukuphakama okuphezulu

Isixazululo:

Ingxenye eqondile yejubane lokuqala:

v _oy = v _o isono θ = (10 m/s)(isono 30 ^o ) = (10 m/s)(0.5) = 5 m/s

Isikhathi sokufinyelela ukuphakama okuphezulu sinqunywa yi- equation yokunyakaza okuqondile . Khetha isiqondiso saphezulu njengesihle kanye nesiqondiso saphansi njengesibi.

Kwaziwa:

Ijubane lokuqala (v _o ) = 5 m/s (elihle phezulu)

Ukusheshisa kwamandla adonsela phansi (g) = – 10 m/s ² (ukwehla okungekuhle)

Ijubane lokugcina ekuphakameni okuphezulu (v _t ) = 0

Okufunwayo: isikhathi sokuphumula (t)

Isixazululo:

v _t = vo _o + g t

0 = 5 + (-10)t

0 = 5 – 10 t

5 = 10 t

t = 5/10 = 0.5 imizuzwana

2. Umzimba uphakanyiswa phezulu nge-engeli engu-30 ^o uye endaweni evundlile ngesivinini sokuqala esingu-30 m/s. Bala isikhathi sokundiza! Ukusheshisa kwamandla adonsela phansi kungu-10 m/s ².

Kwaziwa:

I-engeli (θ) = 3 0 ^o

Ijubane lokuqala (v _o ) = 8 m/s

Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s ²

Kufunwa: Isikhathi esinqunyiwe ngaphambi kokuba umzimba ushaye phansi

Isixazululo:

Ingxenye eqondile yejubane lokuqala:

v _oy = v _o isono θ = (8 m/s)(isono 30 ^o ) = (8 m/s)(0.5) = 4 m/s

Siqala ngokubala isikhathi esiphakathi ukuze sifinyelele ukuphakama okuphezulu sisebenzisa i-equation yokunyakaza okuqondile.

Khetha indlela eya phezulu njengeyakhayo kanye nendlela eya phansi njengeyakhayo.

Kwaziwa:

Ijubane lokuqala (v _o ) = 4 m/s (elihle phezulu)

Ukusheshisa kwamandla adonsela phansi (g) = – 10 m/s ² (ukwehla okungekuhle)

Ijubane lokugcina ekuphakameni okuphezulu (v _t ) = 0

Okufunwayo: Isikhathi esiphakathi (t)

Isixazululo:

v _t = vo _o + g t

0 = 4 + (-10)t

0 = 4 – 10 t

4 = 10 t

t = 4/10 = 0,4 imizuzwana

Isikhathi sokufinyelela ukuphakama okuphezulu singamasekhondi angu-0.4.

Isikhathi emoyeni singamasekhondi angu-2 x 0.4 = 0.8.

3. Umzimba uphakanyiswa ubheke phezulu nge-engeli engu-30 ^o kanti ukuphakama kwawo kungama-10 metres ukusuka esakhiweni. Ijubane lawo lokuqala lingu-40 m/s. Kuthatha isikhathi esingakanani ukuthi umzimba ufike phansi? Ukusheshisa kwamandla adonsela phansi kungu-10 m/s ².

Kwaziwa:

I-engeli (θ) = 3 0 ^o

Ukuphakama kokuqala (h _o ) = amamitha ayi-10

Ijubane lokuqala (v _o ) = 40 m/s

Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s ²

Kufunwa: Isikhathi emoyeni (t)

Isixazululo:

Ingxenye eqondile yejubane lokuqala:

v _oy = v _o isono θ = (40 m/s)(isono 30 ^o ) = (40 m/s)(0.5) = 20 m/s

Siqala ngokubala isikhathi esiphakathi ukuze sifinyelele ukuphakama okuphezulu sisebenzisa i-equation yokunyakaza okuqondile.

Khetha indlela eya phezulu njengeyakhayo kanye nendlela eya phansi njengeyakhayo.

Kwaziwa:

Ijubane lokuqala (v _o ) = 20 m/s (elihle phezulu)

Ukusheshisa kwamandla adonsela phansi (g) = – 10 m/s ² (ukwehla okungekuhle)

Ijubane lokugcina esicongweni (v _t ) = 0

Okufunwayo: Isikhathi esiphakathi (t)

Isixazululo:

v _t = vo _o + g t

0 = 20 + (-10)t

0 = 20 – 10 t

20 = 10 t

t = 20/10 = imizuzwana emi-2

Isikhathi emoyeni = 2 x 2 imizuzwana = 4 imizuzwana.

Into ingamamitha ayi-10 ngaphezu komhlabathi. Imizuzwana emi-4 yisikhathi sokufinyelela endaweni ehambisana nendawo yokuqala. Ibhola lisahamba liye phansi.

Isikhathi sokufinyelela phansi sibalwa kusetshenziswa i-equation yokunyakaza kokuwa okukhululekile.

Kwaziwa:

Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s ²

Ukuphakama (h) = amamitha ayi-10

Okufunwayo: Isikhathi esiphakathi (t)

Isixazululo:

h = 1/2 gt ^{​​​​2}

10 = 1/2 (10) t ²

10 = 5 t ²

t ² = 10/5 = 2

t = √2 = 1.4 imizuzwana

Isikhawu sesikhathi = imizuzwana eyi-1.4.

Isikhawu sesikhathi esiphelele = imizuzwana emi-4 + imizuzwana eyi-1.4 = imizuzwana emi-5.4.

4. Ibhola elincane liphakanyiswa ngokuvundlile ngesivinini sokuqala v _o = 15 m/s ukusuka esakhiweni esingamamitha ama-5 ukuphakama. Bala isikhathi emoyeni ! Ukusheshisa kwamandla adonsela phansi kungu-10 m/s ²

Kwaziwa:

Ukuphakama (h) = amamitha ayi-5

Ijubane lokuqala (v _o ) = 15 m/s

Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s ²

Kufunwa: Isikhathi emoyeni (t)

Isixazululo:

Isikhathi emoyeni sibalwa kusetshenziswa isibalo sokunyakaza okuwa ngokukhululeka.

Kwaziwa:

Ukuphakama (h) = amamitha ayi-5

Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s ²

Okufunwayo: Isikhathi esiphakathi (t)

Isixazululo:

h = 1/2 gt ^{​​​​2}

5 = 1/2 (10) t ²

5 = 5 t ²

t ² = 5/5 = 1

t = √1 = 1 umzuzwana

[wpdm_package id='531′]

[wpdm_package id='536′]

1. Xazulula ijubane lokuqala libe izingxenye ezivundlile neziqondile
2. Nquma ukufuduka okuvundlile
3. Nquma ukuphakama okuphezulu
4. Nquma isikhathi esinqunyiwe
5. Nquma indawo yezinto
6. Nquma ijubane lokugcina