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U need to get the relative motions......
displacement of the first particle, assuming x, y axes, would be
(u1.cos@1.t, u1.sin@1.t-g.t.t/2)
the other one has a similar expression, now subtract the displacements to get the relative displacement.....
you get
t(u1.cos@1-u2.cos@2), t(u1.sin@1-u2.sin@2)
dx/dt as well as dy/dt is a constant... you get a straight line...
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Moderation Team
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