A body dropped from top of a tower fall through 40 m during the last two seconds of its fall. The height of tower is (g = 10 m/s2)
(a)60 m
(b) 45 m
(c)80 m
(d) 50 m
(a)60 m
(b) 45 m
(c)80 m
(d) 50 m
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