Kinetická energie a její změna
Quiz
•
Physics
•
10th Grade
•
Practice Problem
•
Medium
Kateřina Šmídová
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na čem NEzávisí kinetická energie tělesa?
na hmotnosti
na rychlosti
na tvaru
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kinetická energie tělesa pohybujícího se rychlostí 5 m/s je 6 kJ. Jaká je kinetická energie téhož tělesa při rychlosti 15 m/s ?
18 kJ
2 kJ
54 kJ
36 kJ
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
1,8 kJ = ....... J
(Pište jen číslo.)
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Jak velkou práci v Joulech musíme vykonat při roztlačování vozíku, aby těleso získalo kinetickou energii 16 000 J ? Pište jen číslo.
(Tření zanedbáme.)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jak se změní kinetická energie tělesa, když tahová síla vykoná práci 20 kJ a třecí síla vykoná práci 5 kJ?
zvětší se o 20 kJ
zvětší se o 5 kJ
zvětší se o 25 kJ
zvětší se o 15 kJ
zmenší se o 5 kJ
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