Name: _______________________ Date: ____ CP: ___ Speed Lab Hypothesis: What does a graph of an object that is speeding up, slowing down, or at a constant speed look like? Materials: Meter stick, cars, timer, and anything else you can think of to make ramps (if needed). Procedure: Set up a ramp and complete Hot Wheels on a Ramp Chart. Use a stopwatch to determine time, and use measures on the meter stick for distance. Use a flat surface to complete Hot Wheels on a Flat Surface Chart. Use a stopwatch to determine time, and measures on the meter stick to measure distance. Data Collection: After collecting data, create a graph for each data set on the back. Graph distance and average time. Conclusion: Complete in your lab notebook. Graph Caitlin’s walk down the hallway. Caitlin Welch walked to Mrs. Grine’s class from Mrs. Braswell’s class. As she left Mrs. Braswell’s class, she walked at a constant rate, moving 1 meter per second for 2 seconds. Then she stopped to say hello to a friend. This took 3 seconds. As she approached Mrs. Grine’s class she slowed down, moving .5 of a meter every second for 2 seconds. Anli French walked from the Media Center to Mrs. As she left the Media Center, she walked at a constant rate, moving 2 meters per second for 3 seconds. Then she slowed down, she walked only 1 meter per second for 2 seconds. Then she stopped to say hello to a friend. This took 2 seconds. Finally she sped-up again walking 2 meters per second for 3 seconds. Hot Wheels on a Ramp Distance (Meters) Time Trials and Average (Seconds) Speed (S=D/T) .25 meter Tr. #1 Tr.#2 Tr.#3 Average .50 meter .75 meter 1 meter Hot Wheels on a Flat Surface... Distance (Meters) Time Trials and Average (Seconds) Speed (S=D/T) .25 meter Tr. #1 Tr.#2 Tr.#3 Average .50 meter .75 meter 1 meter

Distance Versus Time Graph Speeding Up! Distance Versus Time Graph on a flat surface Conclusion: Complete in your lab notebook. Graph Caitlin’s walk down the hallway. Caitlin walked to Mrs. Grine’s class from Mrs. Braswell’s class. As she left Mrs. Braswell’s class, she walked at a constant rate, moving 1 meter per second for 2 seconds. Then she stopped to say hello to a friend. This took 3 seconds. As she approached Mrs. Grine’s class she slowed down, moving .5 of a meter every second for 2 seconds. Anna walked from the Media Center to Mrs. Grine’s. She left the Media Center, she walked at a constant rate, moving 2 meters per second for 3 seconds. Then she slowed down, she walked only 1 meter per second for 2 seconds. Then she stopped to say hello to a friend. This took 2 seconds. Finally she sped-up again walking 2 meters per second for 3 seconds. Distance Time Distance Time

Conclusion #1 Conclusion #2 Distance Time Distance Time