A54.1 kg box is held in place at the top of an 32.9 degree incline by a rope that is parallel to the surface of the incline. the box is then lowered down the incline at 0.459m/s^2, coefficient between incline and box is 0.209, what is the tension supplied by the rope?

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?