A 1200-kg car moving at 15.6 m/s suddenly collides with a stationary car of mass 1500kg. If the two vehicles lock together, what is their combined velocity immediately after the collision?
A) 12.1 m/s
B) 8.6 m/s
C) 6.9 m/s
D) 5.5 m/s
C
Physics & Space Science
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