On Planet X, the height, h metres, of an object fired upward from the ground at 48m/s is described by the equation h = - 16t²+48t, where t seconds is the time since the object was fired upward. Show all your work for each question (a) Determine the height of the object after 2 seconds h= (b) Determine the time at which the object hits the ground (let h=0)

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A: Cos(B) = ?

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A: e) -1+ is greater than -1, so we will take the second piece of the function

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A: Solution: The objective is to find the value of x