# A body of mass 10 kg is moving with a constant velocity of 10 ms−1 . When a constant force acts for 4 s on it, it moves with velocity 2 ms−1 in the opposite direction. The acceleration produced in it is

Question : A body of mass 10 kg is moving with a constant velocity of 10 ms−1 . When a constant force acts for 4 s on it, it moves with velocity 2 ms−1 in the opposite direction. The acceleration produced in it is

(A) $3ms^{-2}$

(B) $-3ms^{-2}$

(C) $0.3ms^{-2}$

(D) $-0.3ms^{-2}$