A stone dropped from a building of height h and it reaches after t seconds on earth. From the same building if two stones are thrown (one upwards and other downwards) with the same velocity u and they reach the earth surface after 
and 
seconds respectively, then
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
For first case of dropping 
For second case of downward throwing
⇒ ⇒ 
......(i)
For third case of upward throwing 
⇒ ⇒ 
.......(ii)
on solving these two equations : 
⇒ ⇒ 
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