The physics problem discusses the scenario of a fly traveling at 5mph towards a train moving at 100mph. At the moment of impact, the fly continues to travel at 5mph until the collision occurs. The discussion clarifies that while the fly's direction changes upon impact, its speed remains 5mph until the moment of collision, contradicting the notion of a crossover point where the fly would be at 0mph.
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girojim said:If a train is traveling 100mph in one direction and a fly is traveling 5mph the opposite, and the fly hits the train what speed is the fly traveling at the point of impact?
berkeman said:5mph. Same speed all the way up until the fly is killed by the impact. Is this a homework question?