Physics question (only 6 lines provided for answering). 求解答答,please~~?

2016-11-27 5:41 am
A particle is released from rest at X.It takes time t1 to fall from Xto Y and time t2 to fall from Y to Z. If XY:YZ=9:16,findt1: t2. Neglect the air resistance.

回答 (1)

2016-11-27 6:48 am
點解第二個step,s會=5t(square)?


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