A child applies a force F⃗ F→ parallel to the xx-axis to a 6.00-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 figure (Figure 1). Suppose the sled is initially at rest at xx=0. You can ignore friction between the sled and the surface of the pond.    Part A) Use the work-energy theorem to find the speed of the sled at 3.0 mm.   Part B)Use the work-energy theorem to find the speed of the sled at 12.0 mm.

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Chapter1: Units, Trigonometry. And Vectors
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A child applies a force F⃗ F→ parallel to the xx-axis to a 6.00-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 figure (Figure 1). Suppose the sled is initially at rest at xx=0. You can ignore friction between the sled and the surface of the pond.
 
 Part A) Use the work-energy theorem to find the speed of the sled at 3.0 mm.
 
Part B)Use the work-energy theorem to find the speed of the sled at 12.0 mm.
 
This graph represents the force \( F_x \) in Newtons (N) as a function of distance \( x \) in meters (m).

- **Axes:**
  - The horizontal axis (x-axis) represents the distance \( x \) in meters (m), ranging from 0 to 12 meters.
  - The vertical axis (y-axis) represents the force \( F_x \) in Newtons (N), ranging from 0 to 10 Newtons.

- **Graph Description:**
  - The graph is a triangular shape composed of two linear segments.
  - The force \( F_x \) increases linearly from 0 N at \( x = 0 \) m to a peak of 10 N at \( x = 8 \) m.
  - After reaching the peak, the force decreases back to 0 N by \( x = 12 \) m.

- **Key Points:**
  - At \( x = 0 \) m, \( F_x = 0 \) N.
  - At \( x = 8 \) m, \( F_x = 10 \) N.
  - At \( x = 12 \) m, \( F_x = 0 \) N.

This graph illustrates how the force varies in a linear manner over a specified distance, peaking at the midpoint before returning to zero.
Transcribed Image Text:This graph represents the force \( F_x \) in Newtons (N) as a function of distance \( x \) in meters (m). - **Axes:** - The horizontal axis (x-axis) represents the distance \( x \) in meters (m), ranging from 0 to 12 meters. - The vertical axis (y-axis) represents the force \( F_x \) in Newtons (N), ranging from 0 to 10 Newtons. - **Graph Description:** - The graph is a triangular shape composed of two linear segments. - The force \( F_x \) increases linearly from 0 N at \( x = 0 \) m to a peak of 10 N at \( x = 8 \) m. - After reaching the peak, the force decreases back to 0 N by \( x = 12 \) m. - **Key Points:** - At \( x = 0 \) m, \( F_x = 0 \) N. - At \( x = 8 \) m, \( F_x = 10 \) N. - At \( x = 12 \) m, \( F_x = 0 \) N. This graph illustrates how the force varies in a linear manner over a specified distance, peaking at the midpoint before returning to zero.
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