Respostas

  • Usuário do Brainly
2014-04-25T18:49:55-03:00
Energia potencial gravitacional=energia cinetica
Epg=Ec
mgh=mv²/2
gh=v²/2
2gh=v²
2.10.5=v²
100=v²
v=√100
v=10m/s
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