A22g bullet traveling 210 m/s penetrates a 2.0kg block of wood and emerges going 150m/s. if the block were stationary on a frictionless plane before the collision, what is the velocity of the block after the bullet passes through? what is the kinetic energy loss of the system?

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?