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Amandau
@Amandau
October 2020
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Um trem se move com velocidade de 5m/s. A partir um certo instante, o condutor passa acelerar uniformemente, com aceleração de 0,4m/s². Quanto tempo depois a velocidade atingirá o valor de 10m/s ?
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wandersonoliveira
V0= 5 m/s
a=0,4m/s²
v=10m/s
v=v0+a.t
10=5+0,4.t
10-5=0,4t
5=0.4t
t=
t=12,5s
4 votes
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Lista de comentários
a=0,4m/s²
v=10m/s
v=v0+a.t
10=5+0,4.t
10-5=0,4t
5=0.4t
t=
t=12,5s