A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x<0 and by y = -(x^2)/d for x>0. The value of d is 2.91 m, and x and y are measured in meters as usual.  Suppose the block starts on the track at x = 0. What minimum initial velocity (moving to the right) must the block have such that it will leave the track at x = 0 and go into freefall?

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9. A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x<0 and by y = -(x^2)/d for x>0. The value of d is 2.91 m, and x and y are measured in meters as usual. 

Suppose the block starts on the track at x = 0. What minimum initial velocity (moving to the right) must the block have such that it will leave the track at x = 0 and go into freefall?
   
5.35 m/s
   
2.27 m/s
   
3.78 m/s
   
7.56 m/s
### Educational Diagram

#### Graph of a Cubic Function

The image depicts the graph of a cubic function, which is characterized by the general form \(y = ax^3 + bx^2 + cx + d\). This type of function creates a distinct S-shaped curve. Below is a detailed explanation of the graph's features:

- **Axes**: The graph is placed over a coordinate system, consisting of an **x-axis** (horizontal) and a **y-axis** (vertical), which intersect at the origin (0,0).

- **Curve**: The curve displayed represents the cubic function and showcases its typical behavior:
  - The curve starts in the top left quadrant, descends through the origin, and ascends again into the top right quadrant.
  - The transition of the curve through the origin indicates an inflection point where the concavity changes.
  
- **Behavior**:
  - **For large negative values of \(x\)**, the curve moves downward, indicating that the function yields large negative values of \(y\).
  - **As \(x\) approaches the origin from the left**, the value of \(y\) decreases and then increases after passing through the origin.
  - **For positive values of \(x\)**, the curve ascends, indicating that the function yields large positive values of \(y\).

This type of graph provides a visual representation of how cubic functions behave generally, with one real root and typically two inflection points where the concavity changes. Such functions appear frequently in various fields such as physics, engineering, and economics, making understanding their graphical representation crucial.
Transcribed Image Text:### Educational Diagram #### Graph of a Cubic Function The image depicts the graph of a cubic function, which is characterized by the general form \(y = ax^3 + bx^2 + cx + d\). This type of function creates a distinct S-shaped curve. Below is a detailed explanation of the graph's features: - **Axes**: The graph is placed over a coordinate system, consisting of an **x-axis** (horizontal) and a **y-axis** (vertical), which intersect at the origin (0,0). - **Curve**: The curve displayed represents the cubic function and showcases its typical behavior: - The curve starts in the top left quadrant, descends through the origin, and ascends again into the top right quadrant. - The transition of the curve through the origin indicates an inflection point where the concavity changes. - **Behavior**: - **For large negative values of \(x\)**, the curve moves downward, indicating that the function yields large negative values of \(y\). - **As \(x\) approaches the origin from the left**, the value of \(y\) decreases and then increases after passing through the origin. - **For positive values of \(x\)**, the curve ascends, indicating that the function yields large positive values of \(y\). This type of graph provides a visual representation of how cubic functions behave generally, with one real root and typically two inflection points where the concavity changes. Such functions appear frequently in various fields such as physics, engineering, and economics, making understanding their graphical representation crucial.
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