Respostas

2013-05-21T18:36:06-03:00

vb=3000m/s

at=3,2s

 

3,2=tb+ts

3,2=d/vb +d/vs

3,2=d.(1/vb+1/vs)

            

3,2=d(1/3000+1/340)

3,2=d(0,000333+0,00294)

3,2=d(0,003273)

d=3,2/0,003273

d=977,6