An object at rest begins to rotate with a constant angular acceleration. if the angular speed of the object is ω after the time t, what was its angular speed (in terms of ω) at the time t/2

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

What sort of waves exhibit the doppler effect?

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?