Use the image to answer

Question

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?
(1 point)
acceleration
mass
velocity
force

Answer 1

In the experimental setup described, the quantity that stays constant during the trials is mass. The mass of the car and the fixed number of metal discs does not change as the car moves along the table.

Acceleration, velocity, and force may vary depending on the forces acting on the car (such as tension in the string and friction), whereas mass remains constant.