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4. An object is thrown upwards with an initial velocity of 8 m/s from a height of 55 meters. The path of the object follows,

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4. An object is thrown upwards with an initial velocity of 8 m/s from a height of 55 meters. The path of the object follows, ss(t) = -4.9t2 + 8t + 55. [5 points each] a. CAREFULLY sketch the function over an appropriate domain and range b. Find the velocity of the object at t = 2. c. Is the object still rising at t = 2? Explain. d. How long will the object be in the air

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