How much time do the pilots have to take evasive action

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Question: Two planes approach each other head-on. Each has a speed of 790km/h, and they spot each other when they are initially 7.0 km apart.

Part A: How much time do the pilots have to take evasive action?

I need help to obtain how much time the pilots have to take evasive action.

Reference no: EM13706904

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