Procedure:

Measure out a distance of 1 meter on the ramp. Raise your ramp to a height of 20 cm at the one meter mark.

1. Measure out a distance of 0.25 meters on the ramp. Place your ball or marble at the 0.25 meter mark on the ramp. Time the ball rolling down the ramp and record the time in your notebook. Do this five times and get an average.
2. Measure out a distance of 0.5 meters on the ramp. Place your ball or marble at the 0.5 meter mark on the ramp. Time the ball rolling down the ramp and record the time in your notebook. Do this five times and get an average.
3. Measure out a distance of 1 meter on the ramp. Place your ball or marble at the 1 meter mark on the ramp. Time the ball rolling down the ramp and record the time in your notebook. Do this five times and get an average.
4. Measure out a distance of 1.5 meters (or the full length of the ramp). Place your ball or marble at the 1.5 meter mark on the ramp. Time the ball rolling down the ramp and record the time in your notebook. Do this five times and get an average.
5. Measure out a distance of 2.0 meters (or 1.25 meters if the ramp is less than 2.0 meters long) on the ramp. Place your ball or marble at the 2.0 meter mark on the ramp. Time the ball rolling down the ramp and record the time in your notebook. Do this five times and get an average.

 

 

 

 

 

Table 1

	Run 1 (s)	Run 2 (s)	Run 3 (s)	Run 4 (s)	Run 5 (s)	Avg time (s)
0.25 m
0.5 m
1.0 m
1.5 m
2.0 m