According to current theories, the universe appears to be made Group of answer choices mostly of dark matter mostly of dark energy mostly of ordinary matter in the form of stars and galaxies of an equal mixture of dark matter and dark energy

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?