An object is launched at a speed of 20.0 m/s from the top of a tall tower. The height y of the object as a function of the time t elapsed from launch is y (t) =4.9t2 + 19.32t + 60, where h is in meters and t is in seconds. Determine:
a) the height H of the tower;
b) the launch angle;
c) the horizontal distance traveled by the object before it hits the ground.
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