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Section B Motion under Gravity11. A body is dropped from a height h under accelerationdue to gravity g. If t, and t, are time intervals for itsfall for first half and the second half distance, therelation between them is(A) tl = t2(B) t, 2t,(D) t, 4t,(C) t, 2.414 t,

Answer»

h=1/2g(t1+t2)^2

2h/g=(t1+t2)^2------(1)

h/2=1/2gt1^2

t1^2=h/g---------(2)

From 1st and 2nd

t1^2=(t1+t2)^2/2

t1=(t1+t2)/1.41

1.41t1=t1+t2

t1=t2/.41

So

t1=2.414t2

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