Answer:
30m
Step-by-step explanation:
we know gm = 1/6 g e
so, gm/g e= 1/6
g e= 6 gm......(.1)
according to laws of motion,
v^2- u^2= 2 (g e) s
0-u^2= 2*-g e*5
=u^2/2g e =5
but from 1,
u^2/2(6gm)=5
u^2/12gm =5
u^2/2gm=30m
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