The instantaneous velocity of an object is the blank of the object with a blank

The instantaneous velocity of the object is its speed and its direction at that particular point.

Basically it also has two features like velocity the magnitude and the direction but in this case as its the instantaneous velocity it is the velocity at a specific instant too.

It is determined similarly to the average velocity of an object, but we narrow the period of the time so that it approaches zero.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west