
Práce - úvod
Authored by Vaclav Koplik
Science
8th Grade
Used 5+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jak značíme práci?
F
s
P
W
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
V čem počítáme práci?
Watty
Jouly
Newtony
metry
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Zaškrtni, co je to (z pohledu fyziky) práce:
držím na zádech batoh
tlačím před sebou popojíždějící auto
na stole je kniha a já ji tlačím pěstí směrem k povrchu stolu
na stole je kniha a já ji tlačím prstem tak, že se posouvá ke hraně stolu
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Zvedl jsi 30kg pytel cementu od země do úrovni pasu (1 metr). Jakou jsi vykonal práci?
30J
300J
3J
žádnou
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Tlačíš před sebou krabici silou 500N na vzdálenost 2 metry. Jakou jsi vykonal práci? Kolik Joulů? (napiš číslo)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jaký je vzorec pro práci?
F = W . s
W = F / s
W = F . s
F = W / s
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tvůj klobouk váží 1kg a je na tvojí hlavě. Je ve výšce 2 metry nad zemí. Jakou konáš práci, když stojíš?
2J
20J
0,5J
žádnou
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