. "102781517"^^ . . "ballistic pendulum"@en-us . . . . "02781517-n"^^ . "102684739"@en-us . . "ballistic pendulum"^^ . . . "a physical pendulum consisting of a large mass suspended from a rod; when it is struck by a projectile its displacement is used to measure the projectile's velocity"@en-us . "0"^^ . . "0"^^ .