A Particle That Is Subjected to a Variable Force Travels

question 62

Multiple Choice

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:
First, 5.0 m and F = 0
Next, 5.0 m and F = 3.0 N
Next, 5.0 m and F = 6.0
Last, 5.0 m and F decreases uniformly from 6.0 N to zero
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