hardware braces
ginsberg scientific 7 1600 9 ballistics car
ballistics car an essential for demonstrating properties of velocity demonstrates that the forward velocity of a ball ejected vertically is the same as the forward velocity of the vehicle from which it was ejected includes a vertical spring loaded barrel and a 1in steel ball the ejection mechanism has two settings that are controlled by a release pin and cord instructions provided dimensions 9 75in x 2 25in x 5 5in american educational products have a lead ship time of 21 days sku amed3136