Name: _______________________ Date: ____ CP: ___ Speed Lab - Advanced 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: 1. Compare the two 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 on a Ramp (Speed) Distance Versus Time Graph on a flat surface (Speed) Conclusion: Compare the two graphs above, how do they differ? What could account for the differences you noted in question 1? Use scientific reasoning to explain your answer? Distance Time Distance Time

Speed Versus Time Graph on a Ramp (Acceleration) Speed Versus Time Graph on a flat surface (Acceleration) Conclusion: Compare the two graphs above, how do they differ? What could account for the differences you noted in question 1? Use scientific reasoning to explain your answer? Speed Time Speed Time