I'm not posotive but I think the answer is
b. atmosphere
Closer orbit less distance to travel round shorter time taken for complete orbit. further orbit further to travel longer time for complete orbit
One minute has 60 seconds, One hour has 60 minutes and one day has 24 hours. Thus, 80 x 60 x 24 = 86,400 sec
if my answer helps you than mark me as brainliest
For acceleration, there needs to be three factors that come into play. Either the change in velocity is increasing, decreasing, or it is changing direction. On a circular track, the direction is always changing. Which fits one of the three factors. So your answer would be A.
