Respostas

2014-06-15T17:12:15-03:00
70 km/h + 25%=>70+( 70.1/4)=70+17,5=87,5 km/h

vm=Δs/Δt ----> 70=Δs/2,5 ---> Δs=70. 2,5=175 km/h

87,5=175/Δt ---> 87,5Δt=175 ---> Δt=175/87,5 ---> Δt=2 horas
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