问题
填空题
体育运动中的射箭,拉弯的弓具有___________能,弓对箭的弹力使箭由静止变为运动,这说明力可以__________________________。
答案
弹性势;改变物体的运动状态
体育运动中的射箭,拉弯的弓具有___________能,弓对箭的弹力使箭由静止变为运动,这说明力可以__________________________。
弹性势;改变物体的运动状态
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