The answer is B.
This is because you add up all of the times (1.44s+1.70s+1.58s+1.76s) and you get 6.48 then you divide 6.48 by 4 to get the average of the times. Now you get the distance (200m) and because speed=distance/time you divide 200m/1.62s to get 123m/s. I hope this made sense :)
Answer: I think it would be Different atoms
Answer:

Explanation:
An adiabatic compressor is modelled as follows by using the First Law of Thermodynamics:

The power consumed by the compressor can be calculated by the following expression:

Let consider that air behaves ideally. The density of air at inlet is:





The mass flow through compressor is:



The work input is:


I honestly think it is B, if not I'm sorry for the incorrect answer, but B seems to be the only one to make sense