A bullet of mass 200 g having initial kinetic energy 90 J is shot inside a long swimming pool as shown in the figure. If its kinetic energy reduce to 40 J within 1 s, the minimum length of the pool, the bullet has to travel so that it completely comes to rest is
(July 28, 2022 (II))
(a) 45m
(b) 90m
(c) 125m
(d) 25m