Three masses m1, m2, and m3 (from left to right) are placed on a thin frictionless rod. Initially m1 and m3 are at rest and m2 is moving rightward toward m3 with speed v. Assume that any collisions between the masses are elastic. (a) Under what condition(s) will m2 collide with m1? (b) Assuming the above condition(s) are met, find the speeds of m1 and m3 after their first collision wi

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