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Kinematic formulas in one-dimension

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A child blows a leaf straight up in the air. The leaf reaches 1.0m higher than its original height with a constant acceleration of 1.0ms2 upward.
How much time did it take the leaf to get displaced by 1.0m?
Let's calculate using a coordinate system where upward is positive.
Round the answer to two significant digits.
  • Your answer should be
  • an exact decimal, like 0.75