What speed must a 600 kg car have in order to have the same momentum as a 1200 kg truck traveling at a velocity of 10 m/s to the west? 5 m/s west B 20 mls west 5 m/s east 20 m/s east

A) 5m/s west
B) 20m/s west
C) 5m/s east
D) 20m/s east
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