Q. In a head-on elastic collision of two equal masses, the velocities are

दो समान द्रव्यमानों की सीधी प्रत्यास्थ टक्कर में वेग होते हैं

A
Exchanged
आदान-प्रदान किया
B
Doubled
दोगुनी
C
Halved
आधी
D
Reversed
औंधा

Explanation

For equal masses in a head-on perfectly elastic collision, the two objects exchange velocities.
If mass A is moving and B is stationary, after the collision:

  • A comes to rest,

  • B moves with A's initial velocity.

This result comes from solving conservation of momentum and kinetic energy equations together.

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