A body of mass 5 Kg is acted upon a variable force. The force varies with the distance covered by the body as shown in figure. What is the speed of the body when the body has covered 25 m ? Assume that the body starts from rest :-
(a) Z e r o
(b) 10 m/s
(c) 15 m/s
(d) 120 m/s
Correct Option (b) 10 m/s