Respostas

2013-04-22T17:20:36-03:00

v=s / t
20 = 80 /t
t = 80 / 20
t= 4s

2 3 2
2013-04-22T17:33:13-03:00

v= 20m/s

s=80m 

 

V = s/t

 

20=80/t

 

t=80/20

 

t=4s

1 2 1