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3. A projectile is fired upward from the ground level (h_0 = 0) with an initial velocity of 208 feet per second. Use the position equation h(t) = -16t^2 + v_0 t + h_0 where h represents the height of an object (in feet), v_0 represents the initial velocity of the object (in feet per second), h_0 represents the initial height of the object (in feet), and t represents the time (in seconds) to answer the following questions. a. How long will take the projectile to hit the ground? Justify your answer algebraically. b. What is the maximum height the projectile will reach? c. Find the time interval when the projectile is above 672 feet? Justify your answer algebraically and write your final answer in interval notation.

          3. A projectile is fired upward from the ground level (h_0 = 0) with an initial velocity of 208 feet per second. Use the position equation h(t) = -16t^2 + v_0 t + h_0 where h represents the height of an object (in feet), v_0 represents the initial velocity of the object (in feet per second), h_0 represents the initial height of the object (in feet), and t represents the time (in seconds) to answer the following questions.
a. How long will take the projectile to hit the ground? Justify your answer algebraically.
b. What is the maximum height the projectile will reach?
c. Find the time interval when the projectile is above 672 feet? Justify your answer algebraically and write your final answer in interval notation.

3. A projectile is fired upward from the ground level (h0 = 0) with an initial velocity of 208 feet per second. Use the position equation h(t) = -16t^2 + v0 t + h0 where h represents the height of an object (in feet), v0 represents the initial velocity of the object (in feet per second), h0 represents the initial height of the object (in feet), and t represents the time (in seconds) to answer the following questions.
a. How long will take the projectile to hit the ground? Justify your answer algebraically.
b. What is the maximum height the projectile will reach?
c. Find the time interval when the projectile is above 672 feet? Justify your answer algebraically and write your final answer in interval notation.

Added by Clara E.

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