Dinamika
Quiz
•
Physics
•
9th Grade
•
Practice Problem
•
Hard
Lucija Matkovic
Used 60+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Što se dogodi kada dvije sile na tijelo imaju istu orijentaciju?
Poništavaju jedna drugu.
Prevladava jača sila.
Njihovi iznosi se zbrajaju.
Njihov zbroj podijeli se s brojem sila.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sila kojom tijelo djeluje na površinu na kojoj se nalazi naziva se:
masom.
težinom.
trenje
slobodni pad.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Silu koja pruža otpor gibanju i ovisi o vrsti dodirnih površina tijela zovemo:
trenje.
sila teže.
težina
gravitacija
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Prema zakonu očuvanja količine gibanja, kada se sudare dva tijela,
brzina im se smanjuje.
brzina im se povećava.
njihova količina gibanja prije i nakon sudara je ista.
njihova količina gibanja nakon sudara je veća.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sila koja uzrokuje kružno gibanje naziva se
sila ravnoteže
gravitacijska sila.
centrifugalna sila
centripetalna sila
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Prema trećem Newtonovom zakonu gibanja kada čekićem udarimo čavao, čekić na njega djeluje silom, a čavao na čekić
ne djeluje silom.
djeluje manjom silom.
djeluje silom istog iznosa, ali suprotne orijentacije.
djeluje silom istog iznosa i orijentacije.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Skakač iz aviona mase 70 kg ubrzava prema tlu akceleracijom od 10 m/s2. Kolika je sila teže koja djeluje na skakača?
80 N
7 N
60 N
700 N
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