a projectile is launched at an angle of 11 degrees above horizontal. what is its initial speed if it hits a target that is located a horizontal distance of 145m from launch point and 10.5m below the launch level

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?

Newtons view of arrangement of the universe. don't copy from anywhere.