Think about how you would describe the motion of your cart to someone. What is the simplest way to describe its motion? Would you need to know its position, or velocity, or both? What tools would you need to measure its motion? Write your thoughts in Notes on your handheld computer.

The following position versus time graph of a cart was made with a SmartWheel. Discuss the motion shown with your group. Did the cart appear to change velocity at anytime? Draw the graph in Notes on your handheld computer and label parts of the graph that you understand or have questions about.