There are approximately how many Atlantic tropical storms that get names each hurricane season

What is the rate of change in a objects position?

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

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?