An air-traffic controller observes two aircraft on his radar screen. the first is at altitude 850 m, horizontal distance 19.1 km, and 25.5° south of west. the second aircraft is at altitude 1300 m, horizontal distance 17.6 km, and 15.0° south of west. what is the distance between the two aircraft? (place the x axis west, the y axis south, and the z axis vertical.)

Observations show that interstellar clouds can have almost any shape and

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?