Question

students are testing how mass affects speed. they choose five bike riders. each rider measures his or her mass. the riders take turns going down the hill. they cannot pedal and must sit upright. the other students calculate and record their speeds. drag each variable of the investigation into the table. independent variable(s) dependent variable(s) control(s) distance between flags mass of bike mass of rider speed of rider

Explanation:

Step1: Identify independent variable

The variable that is changed or controlled to test its effect on another variable. Here, the mass of the rider is what is being varied to see its impact on speed. So, the independent variable is the mass of the rider.

Step2: Identify dependent variable

The variable that is being measured or observed and is affected by the independent variable. The speed of the rider is what is being measured and is affected by the mass of the rider, so it is the dependent variable.

Step3: Identify controls

Controls are variables that are kept the same throughout the experiment. The distance between flags and the mass of the bike should be kept the same for all trials to ensure a fair - test. So, the distance between flags and the mass of the bike are the controls.

Answer:

Independent Variable(s)	Dependent Variable(s)	Control(s)