A student graphed the position of a cart during a 7- second time interval. Which statement best describes the cart? A-The cart was statioary with a velocity of 0m/s for the entire 7 seconds.

B-The cart was stationary except for a short burst of acceleration of 0.5m/s2.

C-The cart moved at a constant velocity of 0.5m/a for the entire 7 seconds.

D-The cart accelerated at a constant rate of approximately 0.8m/s2.