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  13. Wow, a lunar eclipse! Thanks for the heads-up. I’ll definitely try to catch it. It sounds like a relaxing way to spend a late night, almost like settling in for a good game of block blast. Just you, the stars, and maybe a phone for some strategic block blasting while you wait for the show. Reminds me of the long nights playing Block Blast , so relaxing.
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  16. Hello, I think the solution for the part b has some problem. To calculate the new center of mass, the boy's new position should not be 4.24m as shown in the solution. While the boy walks across the raft, the raft is also moving. The other corner already shift towards the left. I believe the final position of the boy relative to the raft's center should be (x + 2.12) m. Using this in the CM calculation, x = -0.424 m. So the raft moved 2.544m in the direction opposite the boys's displacement. Thanks for your attention.

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