
LUCRU MECANIC. PUTEREA MECANICA -TEST USOR

Quiz
•
Physics
•
7th Grade
•
Medium

CAROL DRAGOMIR
Used 238+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In care din urmatoarele situatii se efectueaza lucru mecanic
un om coseste iarba
un om tine un sac in spate
un elev citeste o carte
un elev decupeaza o rama la traforaj
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lucrul mecanic efectuat de o forţă este nul dacă
direcţia forţei coincide cu direcţia deplasării corpului
direcţia forţei este perpendiculară pe direcţia deplasării
direcţia forţei este opusă deplasării corpului
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Expresia lucrului mecanic este
L=F:d
L=F*d
L=F*v
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unitatea de masura pentru putere este
J
KW
W
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Puterea mecanică se poate calcula prin următoarea relaţie matematică
P = F/d
P=F∙d
P = L/t
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