A sixth grader moves down the hall at 1.2 m/s. When he sees a bunch of eighth graders coming, he begins to run. After 3.2 s, he is moving at 3,6 m/s. What is his acceleration?

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?

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false