1.

u39.61.2001A very large number of balls are thrown verticallyupwards in quick succession in such a way that the nextbali is thrown when the previous one is at the maximumheight. If the maximum height is 5m, the number of ballthrown per minute is take g = 10 ms) [KCET 2002(a) 120(b) 80et 60(d) 40

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option c is write answer



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