Question

angelina set up an experiment to see how the different mass of a ball affects the distance it rolls off a ramp. identify the independent variable. height of the ramp; mass of the ball; distance traveled by the ball; who set up the experiment (teacher, student, etc.)

Explanation:

In an experiment, the independent variable is the one that is manipulated to observe its effect on the dependent variable. Here, Angelina is testing how the mass of the ball (the variable she changes) affects the distance it rolls (the dependent variable). The height of the ramp isn't the focus of manipulation here, the distance is the outcome, and who set up the experiment is irrelevant to the variables being tested. So the independent variable is the mass of the ball.

Answer:

B. Mass of the ball