1 airplane travel due north at 300 km while another airplane travels Due South and 300 km are there speed the same or their velocities the same ​

Explanation:

Speed is scalar and velocity is vector. Vector values imply direction as well as magnitude. Therefore, speed and velocity are not the same. The speeds of these 2 planes are the same at 300km/hr, but the velocity of the plane traveling north is +300km/hr while the velocity of the plane traveling south is -300km/hr if we define north as positive and south as negative.

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete