Among the most obvious differences between pseudoscorpions and scorpions is size. Scorpions range from a half-inch long to more than 7 inches; many of the commonly encountered scorpions in the United States are 2 inches long or longer, making them easy to spot with the naked eye. Pseudoscorpions, on the other hand, reach between just under one-tenth of an inch to barely over a quarter-inch long, making them inconspicuous in most circumstances. Most are under 1/8 inch.
V final = (Mass x V initial) + (Mass x V initial) /m + m
V = (0.04 x 300) + ( 0.5 x 0 ) / 0.04 + 0.5
V = 22.2 m/s
