Please provide steps and explanations! Thank you! An alpha particle (mass 4 u) e

Question

Please provide steps and explanations! Thank you!

An alpha particle (mass 4 u) experiences an elastic head-on collision with a gold nucleus (mass 197 u) that is originally at rest. What percentage of its original kinetic energy does the alpha particle lose? An 8 lb rifle and a 10 lb rifle fire identical bullets with the same muzzle velocity. Compare a) the recoil momenta and b) the recoil velocities of the two rifles. Find the center of mass for the three masses shown relative to the 3 kg mass. The masses are located at the vertices of an equilateral triangle.

Explanation / Answer

split question into 3 part and post again...

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