a) (u1 – u2)2 = 2x(f1 + f2)
b) (u1 + u2)2 = 2x(f1 – f2)
c) (u1 – u2)2 = 2x(f1 – f2)
d) (u1 + u2)2 = 2x(f1 + f2)
An express train is running behind a goods train on the same line and in the same direction, their velocities being u1 a
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answerhappygod
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An express train is running behind a goods train on the same line and in the same direction, their velocities being u1 a
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