A stone is dropped from the top of a building. When it crosses a point 
below the top, another stone startsto fall from a point 
below the top, Both stones reach the bottom of building simultaneously. The heightof the building is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
a
For particle 
For particle 
put equation 
in equation 
Put in equation 
the height of the building 
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