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feet per second

  1. General Slingshot Discussions
    1. Take any mobile phone with sound editing app. 2. Go to known distance away from target. Like 6 feet in my case. 3. Set mobile to record sound. 4. Fire. 5. stop recording. 6. You will see THIS: That spike is the sound of impact. But is it all that is? Zoom in. Keep zooming in until you...