What angle does the target particle move after collision

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An atomic nucleus of mass m traveling with speed v collides elastically with a target particle of mass 2m initially at rest and is scattered an 90 degrees.

a. what angle does the target particle move after collision?

b. what are the final speeds of the two particles?

c. what fraction of the initial kinetic energy is transferred to the target particle?

Reference no: EM13325693

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