Question

Speed in a given direction is called

a.
thrust.
c.
mass.
b.
velocity.
d.
acceleration.

Answer 1

Speed is a scalar measure (ex: 5 m/s) and only has magnitude
If you add a direction to it (ex: 5 m/s East) you are making it a vector

Velocity is a vector.

Notice the difference in notation:
Velocity is represented by a V with an arrow above

Speed is represented by either a V or a U with no arrow above (because the arrow signifies that it is a vector)

Answer: Velocity

Answer 2

It is velocity. I hope it is correct answer