1.

A particle is dropped under gravity from rest from a height \[h(g=9.8\,m/{{\sec }^{2}})\] and it travels a distance \[9h/25\] in the last second, the height \[h\] is                         [MNR 1987]

A.             100 m 
B.             122.5 m
C.             145 m
D.             167.5 m
Answer» C.             145 m


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