Questions for Discussion: (Type your answers on a separate sheet of paper and at

Question

Questions for Discussion: (Type your answers on a separate sheet of paper and attach at the end of your report. ) Compare the momentum of the system before impact with the momentum of the system after impact. Do they agree within the limits of experimental uncertainty? Compare the kinetic energy of the system before impact with the kinetic energy of the system after impact. How much energy was lost? What happened to it? How well does the experimental ratio agree with the theoretical ratio of the kinetic energy before impact to the kinetic energy after impact? Which measured quantity contributed most to the uncertainty in this experiment? If we increased the mass of the ball what effect would this have on the height to which the pendulum rises before coming to rest? The spring force applied by the spring gun does not change, however.

Explanation / Answer

for a collision, momentum before collision is equl to that after the collision. it is conservd in both elastic and inelastic collisions. they agree within the experimental limits. the kinetic energy is less after the collision. the lost energy is converted to heat and deformation forces, etc.. the velocity ,contributed most to the uncertainty in this experiment if we increase the mass of pendulum, the height would decrease.

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