Falling Motion Big Idea: Accelerated motion, such as that caused by gravity, can be measured and understood through graphs and calculations of distance vs. time. Goal: To complete several scientific inquiries about an object in motion with changing velocity or accelerated motion. Materials Needed: A way to measure time A way to measure distance A way to determine velocity A way to determine acceleration Phase I: Exploration 1. Find your personal reaction time. You will need to find someone to help you with this measurement. Have someone hold a ruler at your fingertips and then drop at a random time. You will grab the ruler as soon as you see it has started to fall. Do this several times to find an appropriate average distance of fall