Demonstrates that the horizontal component of the velocity of a body thrown vertically upward from another body moving horizontally is the same as that of the body moving horizontally and independent of the vertical component of velocity. Thus, a ball ejected from the vertical barrel of the ballistic car moving with uniform velocity returns back to its original position into the barrel. The apparatus consists of a heavy, metallic barrel mounted vertically on an aluminum car. The car has plastic wheels with ball bearings to minimize friction. Spring loaded piston arrangement with two different heights complete with steel ball a lock-pin with cord with instruction.