The magnitude of the velocity (|| v ||G) indicates the objectâs speed. The direction of the velocity (dir v G) indicates the objectâs direction of motion. The velocity at any point is always tangent to the objectâs path at that point. Thus, the velocity tells you how the object is moving. In particular, the velocity tells you which way and how fast the object is moving. acceleration Acceleration a is a vector, with units of meters per second squared (G s 2 m).