Return to Contents1. a. If a ball is thrown vertically upward with a velocity of 80 ft/sec, then its height after t seconds is given by s = 80t - 16t2.
b. What is the velocity of the ball when it s 96 ft above the ground and on its way down?
2. A brick on a spring bobs up and down with velocity v(t) = -3sint. The initial position of the
brick is y(0) = -1. How high up does the brick go along the y-axis?
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