## Questions 50-51
The diagram below represents a toy car starting from rest and uniformly accelerating across the floor. The time and distance traveled from the start are shown in the diagram.
50. What was the acceleration of the cart during the first 0.4 seconds?
(A) 25m/s2
(B) 9.8m/s2
(C) 50m/s2
(D) 12m/s2