Respostas

2014-03-22T20:42:19-03:00
Resposta

A

30.30 = 900cm = 9m

Epg = m.g.h
Epg = 55.10.9
Epg = 4950J

B

10.30 = 300cm = 3m

Epg = m.g.h
Epg = 55.10.3
Epg = 1650J