Well, yes and no. While a high speed object can travel at about 5 miles a second, or 18,000 mph, most are only a fraction of that.
Years ago, at the University of Arizona, a professor invented a satellite to help police up orbital debris.
http://articles.latimes.com/1995-01-01/local/me-15238_1_space-junk
The secret for the “big ball of goo” is that tough, high tech polymer foams can act much like a catcher’s mitt, and while a small, very high speed object can easily penetrate its outer layers, it can only do so at great cost to its momentum.
That could be useful if you are trying to catch small targets in known orbits.
Anything in low earth orbit is going to be doing 5miles a second. If you are interseting that your closure rate could be as much as double that.