1.
vykon stroja bol 0,4mw.bol v prevadzke 10 min aku pracu vykonal?
2.
b v akej vyske je teleso s hmotnostou 200g ak ma potencialnu energiu 24kj? (g=10m/s2)
3.
bremeno dvihame do vysky 150cm. vykoname tak pracu 100kj.
aka sila dviha bremeno
(dalsia otazka je na fotke)
Dakujem ten kto sa na to podujme
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