Question

Rebecca is conducting an experiment to see if the height of a ramp affects the speed at which a marble rolls down the ramp. What should be the only variable in Rebecca's experiment?
a the material the ramp is made of
b the point from which the marble is released
c the type of marble
d the height of the ramp

Answer 1

@inowalst

Answer 2

@firejay5

Answer 3

@germanchic21

Answer 4

D the height of the ramp