The correct answer to the question is : Speed.
Step-by-step explanation:
Before coming into any conclusion, first we have to understand speed.
Speed of a body is defined as the rate of change of distance travelled by the body or the distance travelled by the body per unit time.
Mathematically speed s =
.
As per the question, we are given the ratio of the distance of a bullet travels to the amount of time it takes to travel that distance.
It is obvious that the ratio indicates the speed of the bullet.
Speed is a scalar quantity. So, there is no need of any direction.