Both speed and velocity measure how fast something is moving. However, since speed is not a _ it does not require an _

vector

direction

Explanation:

Both speed and velocity measures how fast something is moving. Since speed is not a vector, it does not require direction to describe it.

Speed is the distance divided by the time taken. It is a scalar quantity in that it has only magnitude but no direction.

When describing speed, there is no need to specify its direction.

But when describing velocity, we specify both magnitude and direction.