Ballistic Pendelum Lap Post 3

Questions:
1. Conservation of Momentum was proved because the direction of movement before and after the collision was the same. Conservation of energy was proved because the velocity decreased relative to the size and mass of the bob.

2. K(final) - K(initial) / K(Initial) = ((.009)-(.023)) / .009 = 155% loss of energy

3. If the ball bounced off the pendulum with a smaller fractional loss of energy, then the pendulum would have risen to a higher height by however much less the fractional loss of energy was

4. .Ratio is 2.5*m

91:
Of the two methods experimented with in determining the momentum of the projectile, I would have to say the ballistic pendulum method was more accurate. I say this because the projectile in the ballistic pendulum lab was more controlled and there was little room for the energy of the projectile to be lost outside of the controlled environment With the gun and carbon paper lab, the gun moved after every trial due to recoil, thus skewing the results of the data. However in the ballistic pendulum lab, the gun may have moved after every shot, but since the bob is connected to the system, the bob moved with the gun.