At the top of a 9m tall hill, a car has a velocity of 4 m/s, a mass of 1200 kg. Complete the TE chart below if the car rolls to the bottom of the hill. Find the velocity of the car at the bottom of the hill. i really need it ​

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?