Final answer:
Nick Fury's average speed on his drive to the Avenger's headquarters was 200 mph. His average velocity, including direction, would also be 200 mph, but directed northeast.
Step-by-step explanation:
To answer the question about Nick Fury's speed and velocity on his drive to the Avenger's headquarters, we are given that the distance is 600 miles and the time for the journey was 3 hours. Speed is calculated by dividing distance by time, so his average speed was 600 miles / 3 hours = 200 mph.
Velocity, however, is a vector quantity, meaning it has both magnitude and direction. As such, Nick Fury's average velocity would also be 200 mph, but with a direction, which in this case is northeast. This means he was moving at a speed of 200 mph in the northeast direction.