In exercises of unit 1, problem 1B-2 question b, it says "Find the time at which the height of the ball is at its maximum height".
I understand that b/32 should be substituted for t in the following formula: s = bt - 16t². However, I don't get the result which is b²/64. Can someone please explain how to arrive at this answer? Thanks.

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Yesss finaly! I got it. It was a stupid mistake of mine :)

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