Complete the following questions to practice the skills you have learned in this lesson.
- The height of a diver above the water is given by , where is time measured in seconds and is measured in meters. Select two statements that are true about the situation.
- The diver begins 5 meters above the water.
- The diver begins 3 meters above the water.
- The function has 1 zero that makes sense in this situation.
- The function has 2 zeros that make sense in this situation.
- The graph that represents starts at the origin and curves upward.
- The diver begins at the same height as the water level.
- The height of a baseball, in feet, is modeled by the function given by the equation . The graph of the function is shown.
- About when does the baseball reach its maximum height? Round to the nearest second.
- About how high is the maximum height of the baseball? Round to the nearest ten.
- When does the baseball hit the ground? Round to the nearest second.
- Two rocks are launched straight up in the air. The height of Rock A is given by the function , where . The height of Rock B is given by , where . In both functions, is time measured in seconds and height is measured in feet.
The following is a graph of the functions. Use the graph to answer the questions a – c.
- Which graph is the height of Rock A, ?
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Green Graph
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Red Graph
- Which graph is the height of Rock B, ?
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Green Graph
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Red Graph
- Determine which rock hits the ground first.
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Rock B
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Rock A
- Each expression represents an object’s distance from the ground, in meters, as a function of time, , in seconds.
Object A:
Object B:
- Which object was launched with the greater vertical speed?
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Object B
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Object A
- Which object was launched from the greater height?
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Object B
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Object A