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A science student riding on a flatcar of a train moving at a constant speed of 9.

A science student riding on a flatcar of a train moving at a constant speed of 9.4 m/s throws a ball toward the caboose along a path that the student judges as making an initial angle of 61° to the horizontal. The teacher, who is standing on the ground nearby, observes the ball rising vertically. How high does the ball rise?

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