A particle of mass 100gram moves on a straight line. The variation of speed with time is shown in figure. Find the force acting on the particle at t = 1, 3 and 5 seconds.
(A) 2 N, 0 , -1 N
(B)2 N, 0 , -2 N
(C) 1 N, 0 , -1 N
(D) none of these
