Respostas

2013-07-25T14:48:16-03:00
V^2  = vo^2 + 2aΔs
v^2= 20^2 + 2.2,5.100
v^2 = 400 + 500
v^2 = 900
v = √800
v = 30 m/s x 3,6
v = 108 km/h

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