What is the distance and size of blood droplets from a medium force of impact? Naim 07:58 Bloodstain Pattern Analysis What is the distance and size of blood droplets from a medium force of impact? Answer: 1.5 - 8 m/s. Blunt force trauma. Drops with a diameter of 1 - 4 mm. Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+