Question
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A child applies a force F⃗ F→ parallel to the xx -axis to a 10.0-kgkg sled moving on the frozen surface of a small pond. As the child controls the speed of the sled, the xx -component of the force she applies varies with the xx -coordinate of the sled as shown in the figure

1Calculate the work done by the force F⃗ F→ when the sled moves from xx=0 to xx=8.0m.

2Calculate the work done by the force F⃗ F→ when the sled moves from xx=8.0mm to xx =12.0mm.

3Calculate the work done by the force F⃗ F→ when the sled moves from xx=0 to xx =12.0mm.

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Step 1

(1)

Write the expression for the work done by the force in the interval 0<x<8 m.

Step 2

(2)

Write the expression for the work done by the...

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