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A 4.9 g dart is fired into a block of wood with a mass of 24.0...

A 4.9 g dart is fired into a block of wood with a mass of 24.0 g. The wood block is initially at rest on a 1.4 m tall post. After the collision, the wood block and dart land 3.6 m from the base of the post. Find the initial speed of the dart.

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