Constants

Periodic Table

Part A

Two people, one of mass $70kg$ and the other of mass $55kg,$ sit in a rowboat of mass $90kg.$ With the boat initially at rest, the two people, who have been sitting at opposite ends of the boat, $2\mathrm{.}7m$ apart from each other, now exchange seats.

How far will the boat move?

Express your answer using two significant figures.

$d=$

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Part B

In what direction will the boat move?

Towards the initial position of the heavier person.

Towards the initial position of the lighter person.

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