1.

A body is dropped from a height h under accelerationdue to gravity g. If t, and t, are time intervals for its fallfor first half and the second half distance, the relatiobetween them is(A) t1 2(C) t, 2.414 t(B) t, 2t2(D) t, 4t2

Answer»

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

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

h/2=1/2gt12

t12=h/g---------(2)

From 1st and 2nd

t12=(t1+t2)2/2

t1=(t1+t2)/1.41

1.41t1=t1+t2

t1=t2/.41

So

t1=2.414t2



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