Procedure: Using your catapult, place a small projectile in the box. Pull the catapult arm all the way back until it touches the base. Release the catapult and measure the distance from the front of the catapult to the place where the object first lands. Repeat 5 times to get an accurate distance. Repeat the same procedure, but now measure the maximum height of the projectile. Repeat 5 times to get an accurate height.

 

 

 

 

Calculate the velocity of the projectile in the x and y direction and then calculate the velocity and direction of the projectile.

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