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A gun with inertia 5.5 kg fires a 13-g bullet at a stationary target located 1.0...

A gun with inertia 5.5 kg fires a 13-g bullet at a stationary target located 1.0 km away. After the bullet leaves the gun, its speed decreases (constant x component of acceleration a = -1.0 m/s2 ) so that the bullet hits the target at 299 m/s.

If the direction in which the bullet moves is along a positive x coordinate axis, what is the recoil velocity of the gun?

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