How hard would you have to throw a brick to shatter a windshield?

by xomiele
Question by K Z: How hard would you have to throw a brick to shatter a windshield?
my back windshield was shattered, i mean really shatter like there was no glass left hanging and the top right corner of the plastic inside by the window is broken alittle and part of my back speaker is broken, the other day and the people that did it used a brick that weighs about 30 lbs. I think the people that did it might of been in a car when they through it.... my question is can someone

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