Social loafing is most likely to occur .

when no one wants to volunteer to help
when no single person in a group is being watched
during a team sporting event
when people realize they must work alone

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right