Zinthu Zoyenda Molunjika
Kuyenda ndi chinthu chomwe timachiwona nthawi zonse m'moyo watsiku ndi tsiku. Nthambi ya fizikisi yomwe imaphunzira kuyenda imatchedwa makanika. Nthambi ya makanika yomwe imakambirana momwe chinthu chimayendera, popanda kuganizira chifukwa cha kuyenda, imatchedwa kinematics . Mosiyana ndi zimenezi, nthambi ya makanika yomwe imakambirana zomwe zimayambitsa kuyenda ndikufotokozera chifukwa chake zinthu zimayendera momwe zimayendera imatchedwa mphamvu. Munkhaniyi, chinthu chilichonse choyenda chimaonedwa ngati tinthu tating'onoting'ono kapena mfundo (.). Zinthu zoyenda zimaonedwa ngati mfundo kuti zingosavuta kusanthula kwathu. Tangoganizirani ngati mfundo ikuyenda molunjika, ndiye kuti njira yake idzapanga mzere wolunjika.
Chinthu chimanenedwa kuti chimayenda molunjika ngati njira yake ndi yowongoka. Ngati njira yake ndi yokhota, chinthucho sichimayenda molunjika. Kuyenda kwa chinthu, komwe kumaonedwa ngati tinthu tating'onoting'ono, kumakhala kofanana. Kuyenda kwa mbali imodzi kumatha kuchitika mopingasa (mofanana ndi x-axis) kapena mopingasa (mofanana ndi y-axis).
Chitsanzo cha mavuto
1. Mafunso a Mayeso a Dziko Lonse a 2017
Yang'anani chithunzicho!
Mtunda waukulu kwambiri womwe chinthu chimayenda mu nthawi imodzi…
A. 0 s mpaka 10 s
B. masekondi 10 mpaka masekondi 20
C. masekondi 20 mpaka masekondi 30
D. masekondi 30 mpaka masekondi 50
E. masekondi 50 mpaka masekondi 70
Zokambirana
Fomula ya mtunda:
s = vt
Mtunda = malo okhala ndi mthunzi.
Mtunda waukulu kwambiri = malo abwino kwambiri.
A. ½ (10-0)(20-0) = ½ (10)(20) = (5)(20) = 100
B. (20-10)(10-0) + (½)(20-10)(20-10) = (10)(10) + ½ (10)(10) = 100 + (5)(10) = 100 + 50 = 150
C. (30-20)(10-0) = (10)(10) = 100
D. (50-30)(10-0) = (20)(10) = 200
E (70-50) (10-0) + ½ (70-50) (30-10) = (20) (10) + ½ (20) (20) = 200 + (10) (20) = 200 + 200 = 400
Yankho lolondola ndi E.
2. Mafunso a Mayeso a Dziko Lonse a 2017
Tinthu tomwe timapita mmwamba timatsatira equation ya y = 8t – t 2 , ndi y ndi t mu mamita ndi masekondi, motsatana. Liwiro la chinthucho pa t = masekondi awiri ndi…
A. 2 ms -1
B. 4 ms -1
C. 8 ms -1
D. 12 ms -1
E. 16 ms -1
Zokambirana
y = 8t – t 2
v = 8 – 2t
Liwiro la chinthu pa t = masekondi awiri:
v = 8 – 2t = 8 – 2(2) = 8 – 4 = 4 m/s.
Yankho lolondola ndi B.
3. Mafunso a Mayeso a Dziko Lonse a SMA/MA a 2017
Yang'anani tebulo la deta ya liwiro la zinthu zitatu zotsatirazi!
Kutengera tebulo, zitha kutsimikizika kuti chinthu chomwe chili ndi liwiro lalikulu kwambiri ndi...
A. Chinthu A cha t 1 – t 2
B. Chinthu A cha t 2 – t 3
C. Chinthu B cha t 1 – t 2
D. Chinthu C cha t 1 – t 2
E. Chinthu C cha t 2 – t 3
Zokambirana
Chinthu A: liwiro la chinthucho limawonjezeka ndi 4 m/s masekondi awiri aliwonse kapena 2 m/s masekondi 1 aliwonse = 2 m/s 2.
Chinthu B: liwiro la chinthucho limawonjezeka ndi 5 m/s masekondi awiri aliwonse kapena 2,5 m/s masekondi 1 aliwonse = 2,5 m/s 2.
Chinthu C: liwiro la chinthucho limachepa ndi 2 m/s masekondi awiri aliwonse kapena 1 m/s masekondi 1 aliwonse = -1 m/s 2.
Yankho lolondola ndi C.
