Lucrul mecanic
Authored by Carmen Filip
Physics
7th Grade
Used 196+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Lucrul mecanic este o marime fizica:
scalara
vectoriala
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Unitatea de masura pentru lucrul mecanic este:
Newton
Joule
Watt
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Un calator efectueaza lucru mecanic:
Cand ridica bagajul
Cand tine mana pe bagaj
Cand tine bagajul in mana nemiscata
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Lucrul mecanic efectuat de o forta perpendiculara pe directia de miscare este
negativ
pozitiv
nul
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Cand aruncam un corp pe verticala in sus lucrul mecanic al greutatii corpului este:
pozitiv
negativ
nul
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
O macara ridica o placa de beton.Lucrul mecanic efectuat de macara este:
pozitiv
negativ
nul
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