Story = A group of students perform an experiment to study motion. They place a frictionless track on a stack of books to form an inclined plane and set a motion sensor connected to a computer at the top as shown below. The students place a cart on the track and use the motion sensor to record its position and velocity as it moves down the track when released. 1. Which of the following change as the cart moves down the track?select all that applies

A Distance from the sensor

B Velocity

C Acceleration