Respostas

2014-07-11T18:36:56-03:00
V = V0+g. t
90 = 0+10.t
10t = 90
t = 90/10
t=1
 
H= H0 +v.t- g. t²/2 
H=0+90.9-10. 9²/2
H=810-10.81/2
H=810-405
H=405

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