Purpose: The purpose of this experiment is to determine the average speed of a toy car.

Hypothesis: If the distance and time is measured then the average speed can be determined from a distance vs. time graph because the slope of the line is speed. 

Variables:

IV: Time (s)

DV: Distance (s)

Materials: Toy Car, Tape, Stopwatch, Meter Stick 

Procedure: 

1. Mark off the following distances on the floor with tape: 0 meters, 50 cm, 100 cm, 150 cm, 200 cm, 250 cm and 300 cm.

2. Wind up your car and set it before the 0 m mark.  Release the car. 

3. When the front of the car reaches the 0 meter mark, start your timer. Then, stop the timer when the front of the car reaches the 50-cm mark. Record the time in the table on the back. 

4. Repeat this procedure for 2 more trials. 

5. Calculate the average time and record it in the table. (Add up time trials for that distance and divide by 3.) 

6. Calculate the average speed and record it in the table. (See speed formula above.) 

7. Repeat steps 1-6 for the 100-cm mark and 200-cm mark.