1. 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.
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

2. Name: _______________________ Date: ____ CP: ___ Speed Lab
Conclusion:
Plot the distance and time on the Distance Versus Time Graph for both ramp and flat surface on the paper proved. Connect each point to create a line graph.
Explain the slope of the line for each distance versus time graph and the motion of the car:
Ramp Slope = _______________________________________________________
Motion of Car = ______________________________________________________
b. Flat Slope = _________________________________________________________
Motion of Car = _______________________________________________________
Plot the speed and time on the Speed Versus Time Graph for both ramp and flat surface on the paper proved. Connect each point to create a line graph.
2. Explain the slope of the line for each Speed Versus Time Graph and the motion of the car:
3. Out of the 4 graphs, which graph has the steepest slope? Why?
4. Out of the 4 graphs, which graph has the flattest slope? Why?

3. Distance Versus Time on a Ramp
Distance Versus Time on a Ramp! Distance Versus Time Graph on a Flat Surface!
Distance
Time
Distance
Time

4. Speed Versus Time of a Ramp! Speed Versus Time on a Flat Surface!

5. Distance Versus Time Graph #1
Conclusion: Graph the following:
Caitlin walked down the hall 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.
Allison left Mrs. Grine’s room and walked down the hall at a constant rate, moving 1 meter per second for 2 seconds. Then she slowed down, she walked .5 meters per second for 2 seconds. Then she stopped to say hello to a friend. This took 2 seconds. Then she realized she forgot something. She walked back to Mrs. Grine’s room moving 2 meters per second for 1.5 seconds.
Distance
Time
Distance
Time