Respostas

  • Usuário do Brainly
2014-07-13T00:16:43-03:00
2014-07-13T00:18:56-03:00
Fr = m . a

F - Fat = m . a

15 - Fat = 5 . a

15 - N . u = 5a

15 - m . g . u = 5a

15 - 50 . 0,2 = 5a

15 - 10 = 5a

5 = 5a

a = 1 m/s²