有点confuse..If a body travels half its total path in the last second of its fall from rest,finda.the time andb.the height of its fall它是说物体在下落的最后一秒运动的距离是它总共的一半,最后一秒的距离算进去总共吗
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算啊.题意很明朗啊.
======以下答案可供参考======
供参考答案1:
设全程时间为t, 根据h=1/2gt^2列个方程,求出t=2+√2 s, t=2-√2