Question: 18. An arrow is fired into a small target at rest on a frictionless surface. The arrow's mass is 20 g and the target's

18. An arrow is fired into a small target at rest on

18. An arrow is fired into a small target at rest on a frictionless surface. The arrow's mass is 20 g and the target's mass is 2.50 kg. If the speed of the arrow and target combined is 0.67 m/s, what is the arrow's initial speed? (84.4 m/s)

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