a model rocket launches directly upward with an initial velocity of 28 m/s. what is the velocity of the rocket just before it hits the ground

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

How do we measure or think of speed in the united states?

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?