1/2+1/2 because it has coverd half is 1second so the another half will be coverd in one second so therefore 1/2+1/2*2 makes it 1.5m
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answer:when a bullet is fired from the gun, due to reaction force , the gun recoils in the direction opposite to the motion of bullet. the velocity with it recoils is called as recoil velocity. derivation for recoil velocity of gun: initial velocity of gun and bullet are at rest.
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