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Find the time points when the height is 1 foot

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When a ball is thrown, its height in feet h after t seconds is given by the equation

h = vt - 16t^2.

where v is the initial upwards velocity in feet per second. If v = 9 feet per second, find all values of t for which h = 1. Do not round immediate steps. Round your answer to 2 decimals.

If there is more than one answer, indicate with "or".

Please see attached file for full problem description.

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The solution shows how to solve the quadratic equation to find out the moments when the height of the ball is 1 foot.

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Please see the attached file for detailed calculation.

When a ball is thrown, its height in feet h after t seconds is given by the equation

h = vt - 16t^2.

where v is the initial upwards velocity in ...

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