Measuring Constant Speed Date Laboratory Investigation Problem What is the shape ofa distance-time graph of constant speed? Materials (per student) pencil graph paper metric ruler Procedure 1. The illustration on this page represents a series of flash shots taken of a dry-ice puck sliding across the floor. The time between eachflash is 0.1 second. Study the illustration carefully. 2. Position the 0-cm mark of the metric ruler on the front edge of the first puck. This position will represent distance 0.0 cm at time 0.0 second. Record this data in the data table. 3. Without moving the ruler, determine the distance ofeach puck from the first one. 4. Recorde a c h distance to the nearest 0.1 cm in the data table