An alpha-particle of mass suffers 1-dimensional elastic collision with a nucleus at…
PHYSICS · Single correct · AP · Physics C: Mechanics · Linear Momentum · Linear Momentum
Problem
An alpha-particle of mass m suffers 1-dimensional elastic collision with a nucleus at rest of unknown mass. It is scattered directly backwards losing 64% of its initial kinetic energy. The mass of the nucleus is:
(1) 2m
(2) 3.5m
(3) 1.5m
(4) 4m