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A body of mass M1 moving with a velocity U collides with a stationary body...

Physics
WAEC 1993

A body of mass M1 moving with a velocity U collides with a stationary body of mass M2 and both move with a common velocity V lf linear momentum is conserved, which of the following expressions correctly represents V?
  • A.
    M1 U/M1 + M2
  • B.
    M2 U/M1 + M2
  • C.
    M1 + M2/M1 U
  • D.
    M1 - M2/M1 U
  • E.
    M1 U/M1 - M2
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Correct Answer: Option A
Explanation
M1U + M2 x 0 = (M1 + M2)v
V =
M1 U/M1 + M2

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