a projectile $($mass$=0\mathrm{.}271$ kg$)$ is fired at and embeds itself in a target $($mass $=2\mathrm{.}99$ kg$).($The target is initially stationary$).$ the target $($with the projectile in it$)$ flies off after being struck. what percentage of the projectiles incident kinetic energy does the target $($with the projectile in it$)$ carry off after being struck