屋檐定时滴出水滴,当第5滴正欲滴下时,
问题描述：
屋檐定时滴出水滴,当第5滴正欲滴下时,
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答
第i滴位移为Si-1
S2-S1 = 1m
S4 = H
S1 = 1/2 gt2
S2 = 1/2 g (2t)2
S4 = 1/2 g (4t)2
S2 - S1 = 1/2 g (3t2) = 1m
t = 跟号(20/3) = 2.58s
H =S4 = 1/2 (16t2) = 16/3 (s2-s1) = 16/3 m = 5.333m