Dhibaatooyinka lagu xalliyay Dhaqdhaqaaqa Toosan - Xawaaraha joogtada ah
1. Gaarigu wuxuu ku socdaa xawaare joogto ah 10 m/s. Go'aami masaafada ka dib 10 ilbiriqsi iyo 60 ilbiriqsi.
Solution
Xawaaraha joogtada ah ee 10 mitir/ilbiriqsi macnaheedu waa in gaarigu uu socdo 10 mitir 1 ilbiriqsi kasta.
2 ilbiriqsi ka dib, gaarigu wuxuu socdaa 20 mitir,
5 ilbiriqsi ka dib, gaarigu wuxuu socdaa 50 mitir,
10 ilbiriqsi ka dib, gaarigu wuxuu socday 100 mitir ,
60 ilbiriqsi ka dib, gaarigu wuxuu socday 600 mitir.
2. Gaarigu wuxuu ku socdaa waddo toosan xawaare joogto ah oo ah 72 km/saacaddii. Go'aami masaafada gaariga ka dib 2 daqiiqo iyo 5 daqiiqo.
Solution
72 km/saacaddii = (72)(1000 mitir) / 3600 ilbiriqsi = 72,000 / 3600 ilbiriqsi = 20 mitir/ilbiriqsi.
Xawaaraha joogtada ah ee 20 mitir/ilbiriqsi wuxuu la macno yahay in gaarigu uu socdo 20 mitir 1 ilbiriqsi kasta.
120 ilbiriqsi ama 2 daqiiqo ka dib, gaarigu wuxuu socdaa 20 mitir x 120 = 2400 mitir ,
300 ilbiriqsi ama 5 daqiiqo ka dib, gaarigu wuxuu socdaa 20 mitir x 300 = 6000 mitir.
3. Jidhku wuxuu ku socdaa waddo toosan 100 mitir 50 ilbiriqsi gudahood. Go'aami xawaaraha jirka.
Solution
100 mitir / 50 ilbiriqsi = 10 mitir / 5 ilbiriqsi = 2 mitir/ilbiriqsi.
4. Go'aami xawaaraha sida ku cad jaantuska hoose….
Solution
Xawaaraha = Masaafada / waqtiga dhaafay
Xawaaraha = 2 mitir / 1 ilbiriqsi = 4 mitir / 2 ilbiriqsi = 6 mitir / 3 ilbiriqsi = 8 mitir / 4 ilbiriqsi = 2 mitir/ilbiriqsi.
5. Baabuurta A iyo B waxay isku soo dhawaadaan wadooyinka is barbar socda. Marka masaafada u dhaxaysa labada baabuur ay tahay 100 mitir, baabuurka A wuxuu ku socdaa xawaare joogto ah oo ah 10 m/s, baabuurka B wuxuu ku socdaa xawaare joogto ah oo ah 40 m/s. Go'aami (a) masaafada baabuurka A ka hor inta uusan dhaafin baabuurka B (b) muddada u dhaxaysa baabuurka B wuxuu marayaa baabuurka A.
Solution
Gaariga A wuxuu ku socdaa xawaare joogto ah 10 mitir/ilbiriqsi, taasoo la micno ah in gaariga A uu u socdo ilaa 10 mitir 1 ilbiriqsi kasta. 2 ilbiriqsi ka dib, gaarigu wuxuu u socdaa ilaa 20 mitir.
Gaariga B wuxuu ku socdaa xawaare joogto ah 40 mitir/ilbiriqsi, taasoo la micno ah in gaariga B uu u socdo ilaa 40 mitir 1 ilbiriqsi kasta. 2 ilbiriqsi ka dib, gaariga B wuxuu u socdaa ilaa 80 mitir.
20 mitir + 80 mitir = 100 mitir.
(a) Masaafada gaariga A ka hor inta uusan dhaafin gaariga B waa 20 mitir. Masaafada gaariga B ka hor inta uusan dhaafin gaariga A waa 80 mitir.
(b) Muddada u dhaxaysa baabuurka B ka hor inta uusan dhaafin baabuurka A waa 2 ilbiriqsi. Muddada u dhaxaysa baabuurka A ka hor inta uusan dhaafin baabuurka B waa 2 ilbiriqsi
5. Haddii mitirka xawaaraha gaarigu uu muujiyo 108 km/saacaddii, go'aami masaafada uu gaarigu safray hal daqiiqo gudaheed.
Xalka:
Qalabka xawaaraha lagu cabbiro waa qalab lagu cabbiro xawaaraha. Xawaaraha gaarigu waa 108 km/saacaddii.
108 km / saac = (108) (1000 mitir) / 3600 ilbiriqsi = 30 mitir/ilbiriqsi.
1 daqiiqo = 60 ilbiriqsi
Xawaaraha gaariga 30 mitir/ilbiriqsi waxay la macno tahay in gaarigu uu u socdo ilaa 30 mitir hal ilbiriqsi gudaheed.
Ka dib 1 ilbiriqsi, gaarigu wuxuu u socdaa ilaa 1 x 30 mitir = 30 mitir.
Laba ilbiriqsi ka dib, gaarigu wuxuu u socdaa ilaa 2 x 30 mitir = 60 mitir.
Laba ilbiriqsi ka dib, gaarigu wuxuu u socdaa ilaa 60 x 30 mitir = 1800 mitir.
6. Tom ayaa kubbad toos ah u tuuray Andrew . Tom iyo Andrew waxay u kala fogaadeen ilaa 10.08 mitir . Kubadda si toosan ayaa loo tuurayaa waxayna u socotaa 20 m/ s (iska indha tir cufisjiidadka). Andrew wuxuu kubadda ku dhuftay 4.00 x 10 -3 ilbiriqsi ka dib markii kubadda la tuuray. Haddii qofka wax ku dhufta uu ku dhaqaaqo xawaare joogto ah oo ah 5.00 m/s, kubadda waxaa ku dhufanaya qofka wax ku dhufta ka dib marka qofka wax ku dhufta uu u dhaqaaqo ilaa…
La yaqaan:
Masaafada u dhaxaysa Tom iyo Andrew = 10.08 mitir
Xawaaraha kubadda (v) = 20 m/s
Muddada u dhaxaysa (t) = 4 x 10 -3 ilbiriqsi = 0.004 ilbiriqsi
Xawaaraha garaacaha (v) = 5 m / s
SE buska: Kubbada waxaa ku dhufta qofka wax ku dhufta ka dib markii kubbadu ay u dhaqaaqday ilaa…
Xalka:
Masaafada Kubadda:
s 1 = vt = (20) (0.004) = 0.08 mitir
Masaafada uu ku socdo weeraryahanka:
s 2 = vt = 5 t
Masaafada Kubadda + masaafada qofka wax ku dhuftay = masaafada u dhaxaysa Tom iyo Andrew.
0.08 + 5 t = 10.08
5 t = 10.08 – 0.08
5 t = 10
t = 10 / 5
t = 2 ilbiriqsi
Masaafada uu ku socdo weeraryahanka:
s 2 = vt = 5 t = (5) (2) = 10 mitir
7. Ugaarsade gaarigiisa wata ayaa eryanaya deero. Gaarigu wuxuu ku socdaa 72 km/saacaddii deeradana waxay ku socotaa xawaare dhan 64.8 km/saacaddii. Marka masaafada u dhaxaysa gaariga iyo deerada ay tahay 2012 mitir, ugaadhsade wuxuu rasaas ku riday qorigiisa. Rasaasta qoriga waxay ka soo baxaysaa 200 m/s. Go'aami muddada deerada la tooganayo.
A. 0.5 ilbiriqsi
B. 1 ilbiriqsi
C. 1.25 ilbiriqsi
D. 1.5 ilbiriqsi
La yaqaan:
Xawaaraha gaariga (v b ) = 72 km/saacaddii = (72)(1000 m) / 3600 s = 20 m/s
Xawaaraha deerada (v r ) = 64.8 km/saacaddii = (64.8)(1000 m) / 3600 s = 64800 m / 3600 s = 18 m/s
Marka rasaasta la rido, masaafada u dhaxaysa gaariga iyo deerada (deerada) = 202 mitir
Xawaaraha dabka (v p ) = 20 m/s + 200 m/s = 220 m/s
Hubka ay haystaan ugaarsatada ku jira gaari ku socda xawaare dhan 20 m/s si xawaaraha gaariga loogu daro xawaaraha rasaasta.
La Raadinayo: Go'aami muddada deerada la tooganayo
Xalka:
Ka fikir baabuurta iyo deerada oo si joogto ah u socda.
Isle'egta: v = s / t ama s = vt
v = xawaare, s = masaafada, t = kala-goynta waqtiga
Masaafada = 202 + X r = 202 + v r t = 202 + 18 t
Masaafada = Y p = v p t = 220 t
Masaafada uu maro deerada = masaafada uu maro xabadu
202 + 18 t = 220 t
202 = 220 t – 18 t
202 = 202 t
t = 202 / 202
t = 1 ilbiriqsi
Jawaabta saxda ah waa B.
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