A Constant Force F Is Applied to a Body of Mass

Multiple Choice

A constant force F is applied to a body of mass m that initially is headed east at velocity v₀ until its velocity becomes $\Delta$ v₀.The total time of travel is 2t.The total distance the body travels in that time is

A) $\frac { 1 } { 2 } \frac { F } { m } t ^ { 2 }$ .
B) $\frac { F } { m } t ^ { 2 }$ .
C) $v _ { 0 } t - \frac { 1 } { 2 } \frac { F } { m } t ^ { 2 }$ .
D) $v _ { 0 } t + \frac { 1 } { 2 } \frac { F } { m } t ^ { 2 }$ .
E) $2 \left( v _ { 0 } t + \frac { 1 } { 2 } \frac { F } { m } t ^ { 2 } \right)$ .