抛体运动是在重力作用下的运动,除抛射初速度沿竖直方向外,运动轨迹均为曲线,叫抛物线,是典型的匀变速运动,运动可分解为初速度水平方向上的匀速直线运动和竖直方向上的匀变速运动两个分运动,水平射程等于落地瞬时速度矢量三角形面积的2/g.抛体运动过程,机械能 The projectile movement is a movement under the action of gravity. Except that the initial velocity of projectile is along the vertical direction, the motion trajectory is a curve called a parabola, which is a typical uniform variable speed motion, and the motion can be decomposed into a uniform velocity linear motion And the vertical direction of the uniform speed motion two sub-movement, the horizontal range is equal to the landing instantaneous velocity vector triangle area 2 / g. Projectile motion, mechanical energy