A driver,traveling at 22 m/s,slows down her 2000 kg truck to stop for a red light.What work is done on the truck by the friction force exerted by the road on the truck?
A) -2.2 × 104 J
B) -4.4 × 104 J
C) -4.8 × 105 J
D) -9.7 × 105 J
Correct Answer:
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