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Physics
Physics
Problem
Write the expression for the final velocity
v
1
v_1
v
1
of a body of mass
m
1
m_1
m
1
that collides head-on and elastically with a body of mass
m
2
m_2
m
2
moving with initial velocity
u
2
u_2
u
2
, when the initial velocity of the first body is
u
1
u_1
u
1
.
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