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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, point, 0, start text, m, end text higher than its original height with a constant acceleration of 1, point, 0, start fraction, start text, m, end text, divided by, start text, s, end text, squared, end fraction upward.
How much time did it take the leaf to get displaced by 1, point, 0, start text, m, end text?
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, point, 75
start text, s, end text