Respostas

2013-12-07T17:45:59-02:00
1)
V=V₀ + Δt
V=2+ 15t
2)
V=2+15.80
V=2+1200
V=1202
3)
V=2+15t
400=2+15t
(-1)-15t=2-400 (-1)
15t=2+400
15t=402
t=402/15
t=26,8
4)
V=2+15t
250=2+15t
(-1)-15t=2-250 (-1)
15t=2+250
15t=252
t=252/15
t=16,8

espero ter ajudado
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