Answer to the Question 06/97
The question was:
At what speed will a tennis ball be able to break a glass window?
(3/2001) Finally, after more than 3 years we have a solution
of the problem. Larry Weinstein from Old Dominion University,
Norfolk, VA, USA
(e-mail weinstei@physics.odu.edu)
suggested a solution presented below. The solution includes a number of assumptions
and approximations. We will appreciate comments on the solution.
The answer: the speed is between 20 and 30 m/s.
The solution is presented in the following postscript file
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