1. How does the initial velocity of a falling ball affect its time to hit the ground compared to a ball dropped from rest?
2. What is the primary factor used to determine debris impact timing according to the source?
3. When was the concept of the rainbow boundary width, defined by maximum deviation angles, first established in optical physics?
Time for ball to hit ground
Depends on height and initial velocity.
Debris impact timing
Determined by vertical motion analysis.
Rainbow boundary width
Set by deviation angles and dispersion.
Maximum rainbow height
Limited by the elevation angle of the apex.
Antenna ground contact time
Affected by fall and rotational motion.
Free fall time — factors?
Initial velocity, height, gravity.
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