Auniform thin rod of length 0.700 m and mass 4.10 kg can rotate in a horizontal plane about a vertical axis through its center. the rod is at rest when a 3.0 g bullet traveling in the rotation plane is fired into one end of the rod. as viewed from above, the bullet's path makes angle θ = 60° with the rod. if the bullet lodges in the rod and the angular velocity of the rod is 15 rad/s immediately after the collision, what is the bullet's speed just before impact? m/s