If a curling stone has a mass of 5kg and it slides with a velocity of 2.6 m/s and collides with another stone (at rest) of double the mass causing the first stone to stop. What is the momentum of the second stone?

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?