Two objects traveling at the same speed have different velocities if they

A) Start at different times

B) Travel different distances

C) Have different masses

D) move in different directions

The answer would be D, as even though both velocity and speed may share similar resultants in this scenario, speed is a scalar, while velocity is a vector. Thus, velocity can have direction and move negatively (the opposite direction from which it started) while speed is a measurement of quantity.