Question

In the experimental setup shown, a car has one end of a string attached to it. The other end of the string has a hanger on which metal discs can be added or removed. The car moves along the table, and two photogate probes sense the motion of the car. The probes send information to a computer that displays the experimental results.
Which quantity is being held constant in this experiment?
force
mass
velocity
acceleration

Answer 1

Velocity

Answer 2

it's actually mass.

Answer 3

mass

Answer 4

Mass

Answer 5

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Answer 6

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