:: Maybe I should change my definition to instantaneous action per metre, otherwise I would be defining impulse rather than momentum . talk ) 04 : 31, 2 November 2011 ( UTC)
12.
Its instantaneous action also made it useful for counter-battery fire : high-explosive shells fired by 60-pounder and six-inch field guns were targeted on enemy artillery, and by bursting above ground could cause maximum damage to enemy artillery, mountings and crew.