A particle that is subjected to a variable force travels a distance of 20 m in a straight line in the same direction as the force.The force varies as follows: 
What was the total work done by this force during the full 20-m trip?
A) 15 J
B) 30 J
C) 45 J
D) 60 J
E) 75 J
Correct Answer:
Verified
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