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1．用动量定理例1 将一质量为m的物体以初速v0。竖直向上抛出,已知物体在运动过程申所受空气阻力的大小与其运动速度大小成正比,比例系数为A,物体能够上升的最大高度为H,求物体上升过程所用的时间．
1. Use the momentum theorem Example 1 to put an object of mass m at the initial velocity v0. Throws upwards vertically. The known object’s air resistance in the motion process is directly proportional to the speed of its movement. The proportional coefficient is A, and the maximum height that the object can rise is H. The time required for the object to rise is calculated.