A child applies a force F ? parallel to the x -axis to a 7.00- k g sled moving o

Question

A child applies a force F? parallel to the x-axis to a 7.00-kg sled moving on the frozen surface of a small pond. As the child controls the speed of the sled, the x-component of the force she applies varies with the x-coordinate of the sled as shown in figure (Figure 1) . Suppose the sled is initially at rest at x=0. You can ignore friction between the sled and the surface of the pond.Use the work-energy theorem to find the speed of the sled at 1.0m Use the work-energy theorem to find the speed of the sled at 12.0m

Explanation / Answer

A child applies a force F? parallel to the x-axis to a 7.00-kg sled moving on the frozen surface of a small pond. As the child controls the speed of the sled, the x-component of the force she applies varies with the x-coordinate of the sled as shown in figure (Figure 1) . Suppose the sled is initially at rest at x=0. You can ignore friction between the sled and the surface of the pond.Use the work-energy theorem to find the speed of the sled at 1.0m Use the work-energy theorem to find the speed of the sled at 12.0m

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