(2) A stone is thrown vertically upward from the ground with an initial velocity of 40 ft/sec. (2.1) How long will the stone be going up? (2.2) How high will the stone go? (2.3) After how many seconds is the velocity of the ball one-half the initial velocity? (2.4) What is the height of the ball when its velocity is one-half the initial velocity?

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