编写一个飞机(Plane)类，包含以下属性：
域：初始位置，初始速度，加速度
方法：到达某个位置需要的时间public double arrive(double 目标位置){return 时间}
两个飞机追及时间public double meet(Plane 另一个飞机){return 追及时间}
（注意：需要考虑可能永远无法到达、追及）

这个题目稍微涉及了一些物理知识
第一个问题比较简单，第二个稍微复杂点
下面代码仅供参考

public class Plane {

    private double position;// 初始位置
    private int speed;// 初始速度
    private int acceleration;// 加速度

    public Plane(double position, int speed, int acceleration) {
        this.position = position;
        this.speed = speed;
        this.acceleration = acceleration;
    }

    public Long arrive(double target) {
        double s = target - position;
        Long time = 0L;
        Double length = 0D;
        while (s > length) {
            length += speed + (0.5 + time) * acceleration;// 根据s=v*t+0.5*a*t^2，得出t+1比t多前进v+(0.5+t)*a
            time++;
        }
        return time;
    }

    public Long meet(Plane plane2) {
        Double pl1 = 0D, pl2 = plane2.position - position;
        int currentSpeed1 = speed, currentSpeed2 = plane2.speed;
        Long time = 0L;
        while (pl1 < pl2) {// 当后面的飞机的位移超过前面的飞机，表示已经追上
            pl1 += speed + (0.5 + time) * acceleration;
            pl2 += plane2.speed + (0.5 + time) * plane2.acceleration;
            currentSpeed1 += acceleration;
            currentSpeed2 += plane2.acceleration;
            if (currentSpeed1 < currentSpeed2 && acceleration < plane2.acceleration) {//当速度和加速度都小于被追赶者，表示不可能追上
                return -1L;
            }
            time++;
        }
        return time;
    }

    public static void main(String[] args) {
        Plane plane = new Plane(0L, 5, 5);
        Long time = 0L;
        time = plane.arrive(100);
        System.out.println("到达目的地所需时间：" + time + "s");
       

        Plane plane2 = new Plane(100L, 5, 4);
        time = plane.meet(plane2);
        if (time >= 0) {
            System.out.println("相遇所需时间：" + time + "s");
        } else {
            System.out.println("无法相遇");
        }
    }

    public double getPosition() {
        return position;
    }

    public void setPosition(double position) {
        this.position = position;
    }

    public int getSpeed() {
        return speed;
    }

    public void setSpeed(int speed) {
        this.speed = speed;
    }

    public int getAcceleration() {
        return acceleration;
    }

    public void setAcceleration(int acceleration) {
        this.acceleration = acceleration;
    }

}

这是作业吗