# For each of the following situations, identify which of mechanical energy, kinetic energy, and momentum is/are...

###### Question:

For each of the following situations, identify which of mechanical energy, kinetic energy, and momentum is/are conserved. Your answer may contain anywhere from zero to all three of these options. (pt each; pt bonus for getting 5 or more correct; another point bonus for getting all 7 correct) (a) A rock slides down a frictionless ski jump ramp, flies off the ramp, bounces off a vertical spring, and then is about to land on the ground. (b) At a July 4 fireworks show, a firework is shot into the air. Consider as it is rising toward its peak. (e) Now consider as it explodes. (d) Finally consider as the fragments fall back to earth (e) At the LHC accelerator, two lead nuclei collide in an inelastic collision. (1) Also at the LHC, two protons collide in an elastic collision (g) A US Air Force pilot ejects from his F18 jet and safely descends to earth with the use of his parachute.

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