b. the forces of attraction among them limit their motion.
Hi am not sure but have searched on online
Distance = (30+40+50) = 120 km
It's back where it started, so displacement = zero
2 pounds = 9 burgers figure out ow many 9's you can get out of 100: 100/9=11 but that only makes 99 you need 100 so we would add another one making 12. now multiply 12 by 2: 12·2=24. You would need 24 pounds of meet :)
