please solve this...
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hyunxu:
ans: 4 secs
yes it is correct.
:)
please explain
take g = 9.8m
we know a formula h = 1/2 g. t^2
then t = square root of h×2/g
square root of 78.4×2/9.8
:)
thanks
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Solution:-
given by:-
hieght of buelding = 78.4 m
g = 9.8m/s^2
i think (4 secound your right answer)
given by:-
hieght of buelding = 78.4 m
g = 9.8m/s^2
i think (4 secound your right answer)
yah it's correct.
but no proper explanation =_=
i know
its ok i understand it.
then no problem :)
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