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jcb7359 jcb7359
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6 years ago
A 6.0-kg object moving 5.0 m/s collides with and sticks to a 2.0-kg object. After the collision the composite object is moving 2.0 m/s in a direction opposite to the initial direction of motion of the 6.0-kg object. Determine the speed of the 2.0-kg object before the collision.
 a. 15 m/s
  b. 7.0 m/s
  c. 8.0 m/s
  d. 23 m/s
  e. 11 m/s
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