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A 10-kg object moving west at a speed of 10 m/s, collides with a 40-kg object moving east with a speed of 5.0 m/s. On collision, the two objects
stick together and move as one object. The final velocity of the combined object is
Select one or more:
O a. 10 m/s
O b. 5 m/s
c. 7.5 m/s
O d.om/s
O e. 2 m/s

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