A rock falls from a height X1 . Two seconds later , the second rock falls from a height X1-60 . From what height the first rock falls , and how much time did it take , if both of the rock fall at once ? Please tell me how the equation goes .(if possible)
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closed as too localized by David Zaslavsky♦ Oct 10 '12 at 18:56
This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, see the FAQ.
