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 -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) $2\left(v_{0} t+\frac{1}{2} \frac{F}{m} t^{2}\right)$ .