Dora rolled a marble down a ramp and recorded the potential energy and kinetic energy of the marble at different positions on the ramp, as shown in the table. Marble experiment
Height of
Marble from Ground (meters) Potential Energy of
Marble (Joules) Kinetic Energy of
Marble (Joules) Total Energy of
Marble (Joules)
Trial 1 1 2 4 6
Trial 2 2 4 2 6

Which is the constant variable in this experiment?
Mass of marble
Kinetic energy of marble
Potential energy of marble
Height of marble from ground