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    Projectile motion

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    1) A baseball is hit from a height of 0.8m. After t seconds. its height h, in metres is measured by h = -5t^2 + 20t + 0.8

    a) use the method of completing the square to find the maximum height of the ball?

    b) How long is the ball in the air?

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    Solution Summary

    This shows how to use completing the square to find maximum height, and how to calculate how long a ball is in the air.