Respostas

2014-06-06T14:29:14-03:00
Fr = m.a
90N= 30a
a= 90/30
a= 3 m/s²

:)
  • Usuário do Brainly
2014-06-06T14:30:08-03:00
Boa tarde!

a= F÷m
a= 90÷30
a= 3 m/s²