Physics, 06.05.2021 14:00 22chandlerlashley

Proszę szybką pomoc pls Zadania energia mechaniczna
1.SAMOCHÓD o masie 3,5 t porusza się z szybkością 72 km/h . Oblicz jego energię kinetyczną
2.Dźwig podnosi ciężar 4 kN na wysokość 3 pięter . Oblicz jego energię potencjalną względem ziemi jeżeli jedno piętro ma wysokość 3,5 m
3.Na jaką wysokość można podnieść ciało o masie 20 dag jeżeli wykonamy pracę 0,005 kJ
4.Długopis o masie 50 g leży na biurku o wysokości 1,5 m . Oblicz jego energię potencjalną względem podłogi i po podniesieniu z biurka na wysokość 30 cm względem podłogi i biurka 5
5.jaką masę ma ciało posiadające energię kinetyczną 5 kJ jeżeli porusza się z prędkością 5 m/s

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Proszę szybką pomoc pls Zadania energia mechaniczna
1.SAMOCHÓD o masie 3,5 t porusza się z s...