Answer:
Without this slack, a locomotive might simply sit still and spin its wheels. The loose coupling enables a longer time for the entire train to gain momentum, requiring less force of the locomotive wheels against the track. In this way, the overall required impulse is broken into a series of smaller impulses. (This loose coupling can be very important for braking as well).
Explanation:
Where are the images?!?!?
Answer:
it would be a bad thing because if one person controlled the government then there would only be one mind in charge.
Explanation:
The answer is orbit, we are orbiting the sun as the moon orbits us