Unit 4.1 Self-Assessment(1)

# Unit 4.1 Self-Assessment(1) - 4.1 Self Assessment 1 Megan...

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4.1 Self Assessment 1. Megan drops a rock from a cliff that is 400 feet high. Write a quadratic equation giving the height of the rock in feet after t seconds. How long does it take the rock to land at the base of the cliff? 2. An architect is designing a tunnel and is considering using the function to determine the shape of the tunnel’s entrance. In this model, y is the height of the entrance in feet and x is the distance in feet from one end of the entrance. What is the maximum height of the tunnel? 3. A seagull dives downward from the top of a 500 foot platform with an initial velocity of 42.2 ft/sec. a. Approximately how long until the seagull reaches the ground? b. When will the seagull be 100 feet above the ground? 4. An object is launched at 19.6 meters per second (m/s) from a 58.8-meter tall platform. The Write an equation for the object's height s at time t seconds after launch. a. When does the object strike the ground?

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• Spring '16
• English, Quadratic equation, Elementary algebra, ball, ticket price

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