Alphymus

Shown below is a graph of the x component of force versus position for a 4.0 kg cart constrained to move in one dimension on the x axis. At x = 0 the cart has a velocity of −3.0 m/s (in the negative direction). Which of the following is closest to the maximum speed of the cart?

(A) 1.6 m/s
(B) 2.5 m/s
(C) 3.0 m/s
(D) 4.0 m/s
(E) 4.2 m/s