Question

Use the image to answer the question below.

In the experimental setup shown, a car has one end of a string attached to it, and the other end is attached to a fixed number of metal discs. The car moves along the table and two probes sense the motion of the car. The probes send information to a computer that displays the acceleration and velocity of the experiment. When looking at these results, which quantity stays constant during the trials?



Physics experiment setup with a cart, motion sensor, track, pulley, and laptop showing a bar graph.


(1 point)
Responses

velocity
velocity

force
force

acceleration
acceleration

mass

Answer 1

acceleration

The hanging mass (and thus the net pulling force and the total mass) is fixed, so the net force is constant and the cart undergoes constant acceleration (velocity changes with time).