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French, 15.01.2021 14:00 hailiemanuel9362

Va rog ajutor 1- Definiti urmatoarele notiuni : reper, miscare, traiectorie, miscare rectilinie si uniforma, viteza,
miscare accelerata, inertia, masa, cantarire, densitate.
2- Efectuati transformarile :v=15m/s = ? Km/h
v=90 Km/h= ? m/s
v=300 m/min = ?m/s = ? Km/h
3- 2 atleti alearga cu vitezele de 10 m/s respectiv de 25,6 Km/h timp de o ora15minute si 45
secunde. Cine are viteza mai mare si ce distante parcurg ?
4- Ce volum trebuie sa aiba 2 vase in care punem mase egale 0,27 Kg de mercur cu densitatea 13550 Kg/m si ulei cu densitatea 0,8 g/cm ?

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