Last night I spent my time dropping ice cubes from the top of the bleachers onto students belon. If an

Last night I spent my time dropping ice cubes from the top of the bleachers onto students belon. If an ice cube was dropped from the top of the bleachers (approximately 20 meters high) and the student caught the ice cube 2 meters before it hit the ground,

1- how much time did he have to react?2- how fast was the Ice Cube moving when the student caught it (ignoring air resistance)?need ​

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