1.

Two bodies are dropped at thesame time to fall freely fromthe height of 49m and 25mrespectively. Find the ratio betweenthe times taken by them toreach the earth's surface.....​

Answer»

For ANSWERING this problem, you may need to know the direct result for TIME of fall of an object

It is t=2Hg−−−−√

Where symbols have their usual meaning

You may also take out this result by putting

v=2gH−−−−√ and u=0 in the first EQUATION of kinematics.

So for 1ST object

t1=2H1g−−−−√(1)

And for 2ndobject

t2=2H2g−−−−√(2)

Dividing 1 by 2

t1t2=2H1g−−−−√2H2g−−−−√

HENCE

t1t2=H1H2−−−√



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