Delo in energija b
Quiz
•
Science
•
12th Grade
•
Hard
Sergeja Kulovec
Used 5+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Katere so enote za delo?
N
J
kg
W
kJ
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Katera izjava je pravilna?
Delo je odvisno od velikosti sile, ki delo opravlja in neodvisno od dolžine poti.
Delo je odvisno od velikosti sile, ki delo opravlja in od dolžine poti.
Delo ni odvisno od velikosti sile, ki delo opravlja, pomembna pa je dolžina poti.
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Koliko dela opravi sila 300N na poti 20m, če je vzporedna s potjo? (Ne pozabi zraven merskega števila pripisati tudi enote!)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kolikšna sila deluje vzporedno s potjo, če opravi na poti 10 m 66J dela?
66 N
6,6 N
6,6 J
6,6 kg
5.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Voziček se giblje iz kraja A v kraj B, ki sta med seboj oddaljena 100 m. Miha potiska voziček s silo F1 = 200 N, Marko pa s silo
F2 = 400 N.
Katere izjave so pravilne?
Miha je opravil delo 20 KJ.
Miha je opravil delo 0J.
Marko je opravil delo 0 J.
Marko je opravil 40 KJ dela.
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Avto vozi s hitrostjo 80 km/h. Katere trditve so pravilne?
Kinetična energija avtomobila se poveča, če poveča hitrost na 100 km/h.
Kinetična energija avta se poveča, če zmanjša hitrost na 60km/h.
Kinetična energija se mu ne spremeni, čeprav se njegova hitrost poveča ali zmanjša.
Kinetična energija avtomobila se poveča, če pobere potnika in nadaljuje vožnjo s hitrostjo 80km/h.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kako bi 50 kg vreči cementa povečal potencialno energijo, ne da bi ji spremenil maso?
Cement bi namočil z vodo.
Cement bi vozil v avtomobilu s čim večjo hitrostjo.
Vrečo cementa bi odnesel na podstrešje.
Cementu bi povečal težo.
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