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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 |
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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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