Science 10 Uniform Motion Lab Name(s): __________________ ___________________ _________________ In this lab activity, you and your group (max. three) will be investigating the concepts of uniform motion, distance-time graphs and laboratory skills (sensor technology, measurements, graphing). The purpose of this experiment is to drive a remote control car to simulate UNIFORM MOTION, then create a distance-time graph to verify whether the cart experienced uniform or non-uniform motion. Problem: Does a remote control experience uniform motion when it is driven over a certain time period, as measured using a stopwatch? Hypothesis : I believe that the dynamics cart will experience ………………………… motion, because …………………………………………………………………………….. ……………………………………………………………………………………… ……………………………………………………………………………………… Materials: Stop watch Remote control car Remote control Ruler Procedure: 1. Set up a straight course 20 m long depending on the length of your hallway. 2. Mark the course with tape at the 1m, 2m, 3m, 5, 10, 15, and 20m. 3. Start the car at the zero meter mark and record the time that the car passes each marked location. You must ensure your car is moving at a constant speed! 4. Repeat steps 2-4 for a second trial, but have your car move significantly faster than last time, while maintaining a constant speed. Observations: Table 1. Measurements of the distance a remote control car has traveled from its starting point, as measured every 2.0 seconds using a stopwatch Trial One (Slower) Time (s) Trial Two (Faster) Time (s) Distance from start (m) 0 1 2 3 5 10 15 20 Science 10 Analysis & Interpretation: Answer the following questions, using complete sentences. 1. Draw one distance-time graph that has both sets of data (trial one & trial two) on it. Please include a legend to show which line of best fit represents each set of data. 2. What is the shape of each graph? 3. What do the shapes of the graphs tell us about the motion of the dynamics cart? 4. What is the answer to the laboratory problem? 5. Describe why the two lines of best fit are at different angles. 6. Why do you think scientists always run two or more trials for their experiment? Science 10 Evaluation: Refer to your hypothesis for this lab. Write a paragraph that covers the following topics: • • • Did your hypothesis correctly predict your results? Explain why or why not. Give at least one (1) suggestion for how you might improve the experimental design of this lab (materials, procedure, set-up, etc.). As a result of your findings, give at least one (1) more question that could be further investigated. Science 10