일반물리학 1 — Motion in Two and Three Dimensions: Problem 33

33 A defense air force plane, diving with constant speed at an angle of \(52.0^{\circ}\) with the vertical, drops a shell at an altitude of \(720\text{ m}\). The shell reaches the ground \(6.00\text{ s}\) after its release. (a) What is the speed of the plane? (b) How far does the shell travel horizontally during its flight? What are the (c) horizontal and (d) vertical components of its velocity just before reaching the ground? Assume an \(x\) axis in the direction of the horizontal motion and an upward \(y\) axis.