Explanation:
if I understand correctly, then it moves at 7 feet per minute.
and we need this in meters per second.
one thing we all know, right ?
there are 60 seconds in 1 minute.
so, in other words it is moving at 7 ft / 60 seconds.
so, that is how far in 1 second ?
7/60 ft / 1 second.
now for the second part : meters.
1 ft = 0.3048 meters
7 ft = 2.1336 meters
7/60 ft = 2.1336/60 = 0.03556 meters
so, the object moves at 0.03556 m/s ≈ 0.04 m/s