Two boys searching for buried treasure are standing underneath the same tree. One boy walks east and then north. The other boy walks west and then north. Find the scalar product of their net displacements from the tree.

Question

Two boys searching for buried treasure are standing underneath the same tree. One boy walks  east and then  north. The other boy walks  west and then  north. Find the scalar product of their net displacements from the tree.

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The Answer of Two boys searching for buried treasure are standing underneath the same tree. One boy walks  east and then  north. The other boy walks  west and then  north. Find the scalar product of their net displacements from the tree.

Two Boys Searching for Buried Treasure Are Standing Underneath the Same