MCQ
For perfectly elastic collision
  • A
    $v _2- v _1= u _2- u _1$
  • B
    $v_1-v_2=u_1-u_2$
  • $v_2-v_1=u_1-u_2$
  • D
    $v_2-v_1=\frac{u_1+u_2}{2}$

Answer

Correct option: C.
$v_2-v_1=u_1-u_2$
C

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