Answer: Velocity needs both magnitude and direction
Step-by-step explanation:
Velocity is defined as a Vector quantity which implies that one needs to know both the magnitude and the direction of the object, as a reference frame. The expression for velocity is defined as:
Velocity = Distance * Time <=> V= dt
Acceleration occurs when an object initially moving with a constant velocity, changes motion and velocity increases with time. The expression for acceleration is defined as:
Acceleration = Velocity * Time <=> A= Vt
A typical example of acceleration is a Free Falling Object (i.e. letting a ball drop from a building)