During a takeoff run, an aircraft starts from rest and has a lift-off speed of 120 km/h. a. what minimum constant acceleration does the aircraft require if the aircraft is to be airborne after a takeoff run of 280 m?

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

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?