The majority of homicides that involved a weapon were perpetrated using a gun.
A gun is a long-range weapon that fires projectiles out of a shooting tube, or barrel. The projectiles are usually solid, but they can also be charged particles or pressurised liquid (such as in water guns or cannons, spray guns for painting or pressure washing, projected water disruptors, or technically flamethrowers) (e.g. plasma gun). Solid projectiles can either be tethered or free-flying (like bullets and artillery shells) (as with Taser guns, spearguns and harpoon guns).
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the change in velocity (i think)
Answer:
"But Williams and her sister Venus have already created a legacy by inspiring more African-American children - especially those from low-income areas - to play tennis. The sisters have championed a tennis centre in the Anacostia neighbourhood of Washington, DC, devoting time and money to it's development." - www.bbc.com
Harriet tubman...she was afterwards knwn as moses