An object moving north with an initial velocity of 14m/s accelerates 5m/s squared for 20 seconds. what is the final velocity of the object?

Since it moves 5 m/s faster every second, after 20 seconds it's moving 100 m/s faster than when it started speeding up.

If it was moving at 14 m/s when the acceleration began, it's moving at 114 m/s at the end of the 20 seconds.  Its velocity is 114 m/s North.

That's 255 mph !

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

i think the answer would be reserve.