. If an object travels at a constant velocity, how does its average velocity compare to its instantaneous
velocity throughout the trip?

The average velocity is equal to the instantaneous velocity

Explanation:

The average velocity, , is given as follows;

Where;

Δy = The change in displacement

Δt = The change in time

The instantaneous velocity is the derivative found of the position of the object's displacement with respect to time

Therefore, the instantaneous velocity, = The limit of the average velocity as the change in time becomes closer to zero

When the velocity is constant, the displacement time graph is a straight line graph, and the slope of the displacement-time graph which is the same as the velocity is constant  and therefore, we have;

Therefore, for constant velocity, we have, = the average velocity is equal to the instantaneous velocity.

heat the gas and measure the pressure