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A 0.73-kg magnetic target is suspended on a string. A 0.025-kgmagnetic dart shot horizontally, strikes the target head-on. The dart and the target together acting like a pendulum, swing 12.0 cm above the initial level before instantaneously coming to rest.
1) Sketch the situation and choose a system
2) Decide what is conserved in each part and describe decision
3) What was the initial velocity of the dart?
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