P1 PHY-102: Motion Exercises

PHY-102: Motion Exercises Complete the following exercises. 1. Jane is collecting data for a ball rolling down a hill. She measures out a set of different distances and then proceeds to use a stopwatch to find the time it takes the ball to roll each distance. a. What is the independent variable in her experiment? The ball b. What is the dependent variable in her experiment? The stopwatch c. Give one control variable for her experiment. The different distances 2. Consider an experiment where you drop an object. a. Briefly describe your proposed experiment. (Make sure it is controlled). For my experiment, I will drop a coin off a 10ft porch at different heights. b. What would be the independent variable for your experiment? The independent variable is the coin. c. What would be the dependent variable for your experiment? The distance of the 10ft porch is dependent for this experiment. d. Give one control variable for your experiment. The heights in which I stand while conducting my experiment. 3. Consider a freely falling object. a. What is the acceleration (in m/s2 ) after 5 seconds of fall? 9.8 m/s^2 b. What is the acceleration (in m/s2 ) after 10 seconds of fall? 9.8m/s^2 c. What is the velocity (in m/s) after 5 seconds of fall? 49m/s d. What is the velocity (in m/s) of 10 seconds of fall? 98m/s