Answer:
Speed and velocity are essentially the same thing. However, technically, speed is simply the instantaneous magnitude of velocity. Velocity is a vector and also adds direction into the picture. Because of its vector properties, velocity can exhibit certain results that can never be seen by simply measuring speed. For example, velocity can change from a positive to a negative number if the object reverses its direction of travel, i.e. negative velocity. Speed, however, can never be negative.
Explanation:
