Posted by kulani on Sunday, February 5, 2012 at 9:04am.
You have more information than you need to answer this question. The time to fall does not depend upon the mass, or how high it bounces, or the contact time. The "fall time" is simply
t = sqrt(2H/g)= 2.86 seconds
Are there other parts of the question that require the other information (such as the average force on the ground during a bounce)?
22.98
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