based on motion under gravity
Asked by
| 3rd Dec, 2008,
03:34: PM
Expert Answer:
Let the height of tower be h.
We have:
h=1/2gt2
and h-20=1/2g(t-1)2
solving:
20=1/2g(2t-1)
hence ,t=20/g+ 1
and h=1/2g(20/g+1)2
Answered by
| 4th Dec, 2008,
12:10: PM
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