A net force of magnitude 4.0 N acts on a body of mass 3.0 kg for 6.0 s. The body is initially at rest. Which of the following is the speed of the body after the 6.0 s interval?

A.     \(0.50{\text{ m}}\,{{\text{s}}^{ - 1}}\)

B.     \(2.0{\text{ m}}\,{{\text{s}}^{ - 1}}\)

C.     \(4.5{\text{ m}}\,{{\text{s}}^{ - 1}}\)

D.     \(8.0{\text{ m}}\,{{\text{s}}^{ - 1}}\)

D