CBSE Class 11-science Answered
Pls solve it.
Asked by pb_ckt | 06 Jun, 2019, 09:23: PM
Expert Answer
Qn. 40 :-
if in (t-1) seconds, distance travelled is h/2, then we have , (1/2)g(t-1)2 = h/2 .......................(1)
if in t seconds, distance travelled is h, then we have , (1/2)g t2 = h .......................(2)
By dividing eqn.(1) by eqn.(2), we get, [ (t-1)2 / t2 ] = 1/2 or [ (t-1) / t ] = 1/√2 ..............(3)
By solving eqn.(3) for t, we get t = 2+√2
Answered by Thiyagarajan K | 06 Jun, 2019, 10:48: PM
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