Ballistic Pendulum 2

Observation: 

• Experiment 1: As the ball is fired from the gun, it will hit the pendulum bob and causes the pendulum bob rise a height h. By measuring the height h the pendulum bob rises, I can calculate the initial velocity of the ball before the collision.

• Experiment 2: As the ball is fired from the gun at height h on the table, it will travel in a projectile motion and land on a carbon paper placed on the floor. By measuring the distance that the ball travels horizontally, I can figure out the horizontal velocity of the ball.

Data: 

 Error Analysis:
The percent difference from 2 experiment is 15%. There must be, however, a possibility of human error. Perhaps we marked the wrong spot on a carbon paper during the experiment 2(lead to the wrong data in the distance the ball travels horizontally), or measured the angle inaccurately in experiment 1(lead to the wrong data in height). In addition, there will be a difference in initial velocity of these experiments because the launcher, in fact, did not launch the ball at the same velocity each time.