Question

Which of the following quantities is a velocity?
A.

25 m/s

B.

3 g/L in weight

C.

15 m/s^2

D.

10 km/hr eastward

Answer 1

D.

Velocity is a vector (magnitude + direction). "10 km/hr eastward" gives both.
25 m/s (A) is just a speed (no direction), 15 m/s^2 (C) is acceleration, and 3 g/L (B) is a density/concentration.