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Two identical bodies A and B moving with...

Two identical bodies A and B moving with velocities 13 m/s and - 15 m/s respectively collide head-on elastically. What will be their velocities after collision?

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When masses are equal, velocities are just interchanged after an elastic head-on collision.
`:.` After collision, velocity of` A = - 15 m//s`
velocity of `B = 13 m//s `
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