Respostas

  • Usuário do Brainly
2014-08-04T20:19:08-03:00
S=So+vt
500= So+v.0
So=500m

200=500+20v
-300=20v
v=-15 m/s

S=500-15t
S(1)=500-5.15
S(1)=425 (a)