Page "Jumping" Paragraph 6
from
Wikipedia
Following the moment of launch ( i. e., initial loss of contact with the substrate ), a jumper will traverse a parabolic path.
The launch angle and initial launch velocity determine the travel distance, duration, and height of the jump.
The maximum possible horizontal travel distance occurs at a launch angle of 45 degrees, but any launch angle between 35 and 55 degrees will result in ninety percent of the maximum possible distance.
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2.086 seconds.