A ball is dropped from a high-rise platform at 
starting from rest. After 6 seconds another ball is thrown downwards from the same platform with a speed 
. The two balls meet at 
. What is the value of 
? 
Take 
A
B
C
40 
D
60 
Text Solution
Verified by ExpertsThe correct answer is:
A
Let the two balls meet after 
at distance 
from the platform.
For the first ball
Using 
(i)
For the second ball
Using 
(ii) From equations (i) and (ii), we get
or 
or 
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