Răspunsuri

2014-04-22T10:25:26+03:00
  • Utilizator Brainly
2014-04-22T10:46:03+03:00
M=6kg
Ec=192j
v=?
Ec=v²×m
v²=2Ecsupra m
v²=2×192supra m
v²=384supra6kg....dam radical pe disparitia patratului,si avem :
v=√64
v=8m/s

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