A particle of mass 2.0 kg moves under the influence of the force F(x) = (-5x² = 7x) N. Suppose a frictional force also acts on the particle. If the particle's speed when it starts at x = -4.0 m is 0.0 m/s and when it arrives at x = -4.0 m is 9.0 m/s, how much work is done on it by the frictional force between x = -4.0 m and x = 4.0 m?
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![A particle of mass 2.0 kg moves under the influence of the force F(x) = (−5x² = 7x) N.
Suppose a frictional force also acts on the particle. If the particle's speed when it starts at
x = -4.0 m is 0.0 m/s and when it arrives at x = -4.0 m is 9.0 m/s, how much work is done
on it by the frictional force between x = -4.0 m and x = 4.0 m?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffe788bec-b828-4758-b360-d0e4483537ab%2F42bf73ba-dc7d-4f20-9730-5376329f2243%2Fsq9gb4o_processed.png&w=3840&q=75)
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