The figure above shows an airplane moving horizontally with a constant velocity of + 115 m/s at an altitude of 1050 m. The directions to the right and upward have been chosen as the positive directions. The plane releases a ‘care package’ that falls to the ground along a curved trajectory. Ignoring air resistance, determine the time required for the package to hit the ground.
Voy = 0 m/s; Vy = ?; Y = - 1050 m; ay = - 9.80 m/s*s
根据公示 Y = Voy * t + 1/2 * ay * t*t
最终可以计算出 t ＝ 14.6 s