Gabarito 2. Faça Valer a Pena – Seção 3.2 1. Alternativa Correta: A Resposta Comentada: W J R = ⋅ −4 0 10 17, . W K m v m v vR = ∆ = ⋅ − ⋅ ⇒ ⋅ = ⋅ ...

Gabarito 2. Faça Valer a Pena – Seção 3.2
1. Alternativa Correta: A
Resposta Comentada: W J R = ⋅ −4 0 10 17, . W K m v m v vR = ∆ = ⋅ − ⋅ ⇒ ⋅ = ⋅ ⋅ − ⋅ ⋅− − −2 0 2 17 27 2 27 2 4 0 10 167 10 2 167 10 2, , , ( ,4 10 2 5 2⋅ ) . Logo: v m s= ⋅ ⋅ ⋅ ≈ ⋅ − − 2 6 0 10 167 10 2 7 10 17 , , , .

a) II and IV are correct.
b) II, III, and IV are correct.
c) I, III, and IV are correct.