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?

  • M1 U/M1 + M2 checkmark
  • M2 U/M1 + M2
  • M1 + M2/M1 U
  • M1 - M2/M1 U
  • M1 U/M1 - M2

The correct answer is: A

Explanation

M1U + M2 x 0 = (M1 + M2)v
V =
M1 U/M1 + M2
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